.Net Foundation Design Reviews, 7 Nov 2017

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From YouTube: .NET Design Reviews: GitHub Triage

Description

00:00:00 - Approved: Expose RuntimeWrappedException constructor https://github.com/dotnet/corefx/issues/24946#issuecomment-342573013
00:04:12 - Approved: Provide IEnumerable(T) support for Memory(T) https://github.com/dotnet/corefx/issues/24854#issuecomment-342577441
00:18:47 - Approved: Add String support to ReadOnlyMemory(char) https://github.com/dotnet/corefx/issues/25085#issuecomment-342585466
00:47:24 - Approved: Add SpanExtensions.LastIndexOf https://github.com/dotnet/corefx/issues/24839#issuecomment-342587703
00:53:35 - Approved: Additional API for DbProviderFactories in .NET Core https://github.com/dotnet/corefx/issues/20903#issuecomment-342605350

A

Alright should.

B

Be light and really.

A

View also have audio, but it's.

C

Different nice nice article about the span of tea I liked it thanks.

D

Thanks pretty good back.

E

So 3 to the following I: have the EF guys over from around 30 to 12. So let's keep this one at the end.

E

So what about in PDR on you still run away, show me which one language pardon.

F

Block to leave noise actually.

C

C

E

A

G

A

So what I don't.

H

Know is it related? Yes, we are okay.

H

30 interpreters.

G

C

I

J

H

Yeah, what of high-fidelity interpreters, mm-hmm, brushing them temperature here already.

D

That's basically just saying that systems that want to replicate the runtime functionality, which would include wrapping some exceptions with a runtime wrapped exception they're not able to today, because the constructor is in public for doing so in system link expression, we do so using basically direct access to correlate and Yan is suggesting that we expose it such that you don't need such access to do this.

H

See so if you want to write your own interpreter that doesn't have access to call it internals and.

H

Do we have like a concrete scenario that we want to enable? This is like one? Yes,.

E

So it's my understanding is the runtime originally did not specify that we all exceptions are derived from exception, like you could just throw arbitrary objects right and then I think that, what's upsetting may be said, you know in order to make life easier and we will wrap them for you in runtime, wrapped exception, and but given that user code never has to do, there have been never exposed to public constructor.

E

Linked originally was a SMS closely just start to type in move. Did all these private reflection to exit.

E

Do this, which seems you.

H

Yeah I see so it's about it. The scenario is linked. It's just. We don't want internals visible to end up using the link using internal IT.

K

H

F

H

But now it's the name is bad. It's the class is our Republic yeah I, know I'm, saying that now anything bad, because it's not necessarily wrong by duranta.

H

Now it's wrapped by anybody seems.

E

H

So but now it can be run by user code.

D

K

That were the worst name we have in.

D

D

H

Vote, what is the worst name in the framework.

H

But why is it a bad name? You.

L

May argue that it's.

H

A bad design, but when a space is completely bad, like not.

M

About the names.

H

M

When a space is part of the type name, let's ask mark.

C

He will have opinions. What's the worst thing we ever make. I think the process is really don't wanna, be.

M

H

M

Talking now about names of the times.

N

Don't change the.

L

Pond in the system bath, which is like 50 characters, long longest method names like nobody did then obviously comes from top of my head.

H

What about int pointer.

H

Isn't this the worst name? Why not? It's not a pointer! It's not a need! It's just some arithmetic operations, but not others.

D

H

First API we ever shipped what about the instance method on a study class. Let's just.

H

H

It's not I, I mean it's not like we, so we cannot implement the interface on on span on memory, because it cannot spawn scanner on memory we could but I kind of you know. People want to use it to interact with existing api's, but imagine that it's memory of parts like a numerating by single byte is such a wrong thing to do.

H

Performance-Wise.

E

H

So I don't know, it's kind of you know it's providing API is that kind of shouldn't use, except for interrupts scenarios, so I think in one of the comments I suggested that maybe you can write like a bridge. Id I know, instead of implementing it directly on memory. Just oh. Actually, this is the proposed API. So the title has an ehh so that a proposed API is that we provide an extension method. It takes memory in the wraps it in either I.

H

Think that's fine, because it's more like a bridge, then we implement ienumerable directly on memory than people. You know fact the numerators and then, like you know the teacher just explodes it's.

D

Also, probably more efficient to do it. This way. For the majority of use cases, I mean if you have a method that accepts an ienumerable, and you wanted to give a memory to it. If memory implemented the interface, we would first be boxing to pass the memory in and then we would call get a numerator on it and it would allocate a new enumerator object by having this to enumerable extension method. The innumerable that we return can also double the same numerator, correct.

D

H

That will that's the design that we would implement.

H

Well, but this thing is so they're object that implements this ienumerable of T would also implement ienumerator of T, and the implementation of innumerable would just written this.

D

Like when C sharp generators generally, when the compiler generates an enumerable.

O

That's what it does I was thinking that you talk about yeah. It's.

C

Partial implementation understand it might be clear: okay,.

H

So yeah, initially I just read the title and I'm thinking like people still push for implementation of the interface but I think the extension method is reasonable.

E

Like the example, the.

G

H

But you know if it's a bridging scenario, then it's fine kind of yeah.

O

E

Effectively super large matrix yeah, where you know you easily have 40,000 40,000, 40,000 components and you I, don't think you right. Actually, it seems like.

P

E

H

Well, the so this is yeah. This is true for everything. Api is bridging API. Is that the definition currently are not the most efficient, not the best api is, but they let you keep going while you wait for the platform to adapt to new exchange types. So in this case you can imagine that at some point there would be, you know, create badge that doesn't take. I in a mobile, it takes memory of tea, and then it uses the indexer I mean, gets, expand and uses the index or, to you know copy that the floats.

E

Yankees mysterious the TT case, libraries.

H

So the only question I would have is like do we want the bridge API is to be in the main assembly. I. Think it's fine. It's just one thing to think about cuz. They will stay there for it forever. I.

E

Friendly, even what our team does ever we do States. It's.

D

E

Even if imported in a different is simply like, we just have to maintain that one more assemblies you got plenty yeah I mean to me, like the even extension message in the same namespace seemed fine, because you force people to call it back there right.

E

H

D

B

D

Are already methods be? We have for Interop with with other systems, but we wouldn't you know if we saw it in some type loop somewhere. We would encourage people not to call like memory to array, so this doesn't seem. It seems this seems like just one another method, that's useful for integrating with the rest obsessed. You know your systems, but that we encourage people to find alternatives, for if it was a really hot bath.

E

What we'll be doing some errors, where the only thing you have is a span of T, then you copy it to something, and then you return that you've. What let's.

H

Say, oh, let's say: I have a span and I want to interrupt with ap. Is that.

H

Well, it's all okay, there's another it you can, you can pin you can.

H

Sew another thing you can do is steal back should be yeah. So another thing you can do to interrupt with existing API. So when you have the span is to pin the span and if the API stack pointers, you can literal. That's another interim possibility. Yeah.

E

Thinking, man, you see but deliberately says IANA mobile of something. Then your.

D

D

Mean there are probably some pretty happy things you could do that combine both what you said emo and what Christoph said I mean you could imagine, pinning a span and then creating an innumerable over the pins region. You know over the pointer and the length you just need to be very careful with managing your lifetimes.

E

Didn't we have like an unmanaged ina mobile at some point.

E

H

B

H

I commented on this 13 days ago. You think my memory can holds.

D

The issues right now, so, if you look at like array for example, array provides a numerator and a numerator, you know get a numerator and implements I numerable and whatnot, but the c-sharp compiler actually recognizes arrays specially. And if you look at the il that's generated, it generates the same. Il as if you rep for int I equals 0. I is less than write out length, I, plus plus we could for span. We could expose an enumerator that returns a ref, struct, enumerator and so on.

D

But if you know it would be nice if the language similarly recognized spam as a different generators, the same kind of il.

E

Well, I think, basically, at the time of each side, as we said, this probably should be like some sort of attribute before the type that basically says you know indexer in length. Is there so please write a pole under the example about the detective before somebody proposed, but because, realistically the only contract with the compiler cares about is it has to be able to get the length and have it index all right. Well,.

H

The length doesn't change while you.

E

But it needs to follow artificial I'm saying you probably need an attribute to say like so the compiled that doesn't just magically write a full just because you have length and indexer, but basically the contract is to put the attributed and the only refining have the type is you have to provide at the end, it's quite an answer, and then you use the read only.

L

If you Margo type read only that's liked, then you know that there's less chance, it's a side effect.

E

Well, being span wouldn't be read all right like it's just that the length is invariant, but the indexer like the radius can still change right. The type is strictly speaking on read only, but it's just that length should be. Is it true, yeah I think the only thing you need to have is length and.

H

The read only I don't think it has to say the same semantic support because it just means that unity. This means it instead and not change. But let's say the thing points to something which gives you the length value. Every time you access it, then your type is read only but the length can still change.

L

E

Strictly speaking, like length, I mean I'm, not even sure the leg needs to be immutable strictly speaking, because if you for each over an object and you change the object, state enumeration will also not succeed. We blow up right.

H

E

I mean that's almost types implemented, but they have a version or something right.

E

It's just if you trade arrow case any against arrow case B, it will not be, but but it's in fact this should be a separate like proposal, see that your father language, we first from that or like you just poop in that's and blood, in the hope.

N

That they will do it, I see, see them, and that was the extent of my mind ballin, but I certainly could open one. They will be.

D

Amazing, because.

G

I think we talked about this before.

P

Some definition of easy, I'll so open something right. We have stuck video apparently, then I think.

E

This one yeah well.

E

Yeah I just made it black but apparently like I, have to actually.

O

C

The video is not the screen, Oh.

Q

Here we go all right.

A

So then this one is.

D

And we already have our memory extensions type.

H

Well, I think asan put it in memory. Extensions because he's planning to rename span extensions to memory extensions. So we have span extensions that will become memory, expansions.

H

We have it that is probably not necessary.

A

It makes you probably right and.

H

You put comma before, but in English language.

E

Japanese very easy: if you can clap to it, that's where you put the comma anyway, we'd only memory off char. um That was the thing I think we had this email yesterday about where.

D

Yeah so right now we're introducing these tights fantasy we'd only spent a memory of to you read-only memory of tea and we're using read-only span as a read-only char. Rather, as you know, a way to slice, strings and and arrays and everything else, but memory can't be used to a read-only memory can't be used to slice strings today, and it shouldn't be that hard or much of a perf hit to make that happen. We have already had requests for things like a string segment and that's effectively effectively what a read-only memory of char is.

D

So we can just augment read-only memory of chars implementation to support string and then we can use it for slicing. We can add extension methods on read-only memory of char, for performing string like operations and so on, but the kind of the bare-bones pieces that we would need are one from an API perspective are something that lets. You get a read-only memory of char from a string and then, ideally something that lets.

D

You extract a string from a read-only memory char if it was wrapping one just like we have tried get array on memory and read-only memory, so I'm suggesting we add basically those two methods and then we can figure out subsequently what those string like extensions would be so on memory, extensions and as read-only memory that takes a string and returns a read-only memory, char and then I wasn't entirely sure where to put it, but on something like memory, mercial, an extension method on read-only memory, HR that gave you back the string if it had one.

H

Sounds good to me as long as that aggression is not such that it kills kestrel yeah.

D

I totally agree, I mean I, don't even know if Kestrel uses read-only memory charm, but the implementation can guard any additional type checks behind got a type test for a type of T equals type of charge. So this should have literally zero impact on. You know: read-only memory of bite and stuff like that and then for read-only memory of char.

D

It will likely involve one type test against string for operations like dot span, dot, try get array and so forth, and a type test against string is like you know, another three assembly instructions or something so hopefully.

M

D

Be measurable, but that's why I put the caveat at the bottom of my post here, which is you know we can approve these API is, but then, when we go and add them as part of adding the implementation, we should verify that we don't. You know measurably impact, other scenarios.

N

H

No no, this will. This has the potential of slowing down read-only memory of part performance. Well, because memory has three fields, the first field isn't is object and, and we kind of like switch, we we do. Its memory is basically a union in this guy's. So today we do the switch on the sign of the length. So it also has a length field, and if it's negative, we, if it's positive, it's an array. The object is in there.

H

If it's negative, it's basically like this lifetime memory, managers, thingy now we're going to add the third mode memory.

E

H

Their own memory, nice so now we're gonna, add the third type that can be set to this object field, and we don't have a bit to to track. So we will have to do a type check, not just change. It change the sign of an int which is super efficient, so Steve is saying that, yes, we will have to do a type check, but potentially the type check will not actually kicked in for for the case where it's memory of bytes yeah.

D

My my hypothesis or my assertion is that it won't even be in the assembly because it'll be removed by the JIT.

E

Do something like say, be heavy.

E

Which is basically a class but special, because every the whole data is inline. All of that. How would I so then, how would I slice that I am up with it over the return time, V yeah.

H

So we have I on the inner thread with me: Steven Yong. We are discussing exactly this, so basically there. If we do this right, what we could say, read-only memory of Charlie is our a representation of sliced string. Can we do the same thing for utf-8 string and today I don't believe we can, and the reason is that we have this type char.

H

If you basically the type says it's text correct, like there's, no reason to use char and for something that is not text. Oh, let's see.

M

M

H

Basically says it's text, it's it's a buffer containing text, yeah exactly it has some other things, but at least it says it's text. Well, that's not the case for read, read only memory of bite read only memory of theit can be either utf-8 text or it can be some random set of bytes and suddenly, if we had a bunch of extension methods to operate on utf-8 strings, they would show up on and on by trace and like that would be pretty bad. In my opinion, I.

E

It's just that it's very yeah.

H

And then it would have the same problem. So one of the solutions to this is we introduced utf-8 coding, unit type and it just wraps byte, and now we could do exactly the same thing except it introduces a type that is just a wrapper over bite. It probably introduces some performance hit when you operate our overdosed and bites like our runtime average. It is not as good with handlings charts as it's with building types.

H

So that works for, if you basically, if your objective is to a minimize, the memory occupied by strings, what they did is it works? What it doesn't work is for web traffic, because.

E

It is utf-8, this cannot be exacted what I think their son it's it's, not a global switch for all strains, I think it's.

H

E

H

It only supports Latin, it doesn't support, you be afraid, no.

E

H

E

Of those instances of string, we call the US as you go in degree. You get back and read only memory of char how's that going to work when we would do that thing.

G

E

Basically, get a buffer logically, as YouTube is so.

H

Basically, what somebody brought it up at the on the email thread world where we are discussing this, but basically this is an IP ID that leaks the representation of our shape, but he uncomment it and I fully agree with him that, like we leaked it in so many places that, like we salty salty other problems, use of this one- and this one doesn't make the situation is a different.

D

And we already have as read-only spam, which has the exact same issue.

E

Over the screen, give you back.

E

Yes, oh I, see.

B

E

So, in that case, we'll be also add your try against ping.

O

Hopefully, not because we cannot get it well.

H

I see what you say: hey get the string from span; yeah I, don't know how to implement it. It's.

E

All seen what I just said is like I was asking me that we should get at the try. Get swing for we'd only span as well, but we can't because we don't have that pointer anymore, right right.

D

And can't fish it out.

H

Primetime feature that probably would add, cost to everything. The.

D

Same reason, we don't have tried, get array for Sam right.

G

Because you lost it yeah that makes it that fortunate, but I guess it is.

N

So then, regarding the alternative things like, why did you eat just aesthetics or.

D

What kind of pattern do we want here? Try an array has the benefit that we already have a raised segments so, rather than having three out arguments, you know we just have the one for the array segment. So we want to do something similar. We could use a value to ball. We could return the string and just have to out arguments just sort of figuring out what the pattern is. We want.

E

One easy fix: you just take the same method signatures that you have written up, make every three or unbusy of one.

G

E

Know they're, considering how easy all of our arguments are now c-sharp a I personally, don't mind them as much as it did.

D

Yeah I'm fine with the one that I sort of promised proposed as the primary I just wanted to highlight that there were alternatives as well. I, actually.

H

Preferred the original one because it makes it super clear that you're getting three written values and you should honor the offset in and the count well alternative. Some I can imagine people just like ah I'm gonna, just pass something for offset an account and they'll just use the string that it's apparent.

E

Maybe I mean the only benefit that I see for doing this either as a return value or as an out is the fact that, if you, if you call this method like three times in your, you basically have to create like simple naming convention in, say: s1 offset one count one right, and then it becomes a mess right versus. If you have one thing, you just call them. You know foo, and this.

H

B

You're talking about the tuple.

H

Solution, yes, yeah that I I actually don't mind. The tuple I was more commenting on the one that just returns the string. That seems to me like no.

C

Original under returning string into instead of pool yeah.

D

You know we're talking about using real memory char as the string sort of subset and so time when you would be accessing the string and the offset account would be you're almost certainly about to call some other method that takes them, and so your calling is purely to basically pass the data along. So you're, probably not going to be in a situation. You know frequently where you want to have lots of these things pending on your stack all at the same time,.

H

And also I think it follows that try parent more because it returns a boolean versus the tuple one. You know like I feel we should be using more tuples, but it's not a tri methyl. You were to check like if there's nobody in there and then it's not clear like it's the string now. Is that the pattern? What if the thing that we returned in the tuple is not the reference type and like yes,.

E

Basically, taking this thing and still returning wool, but then returning a single out of all three years that will be.

E

H

O

Also, like that signature I think.

E

It's not very readable that you have like three values: parentheses around them and the question mark is like I. Don't know with this thing that anymore.

H

You need to program more in the rust, but there's a reason: I'm not doing that. No, but it you know it basically, your bar for it. You know. Various symbols is now adjusted to the proper level.

E

I have also been B, because I've seen those experiences operated everywhere and so I don't know seems to me. I would settle on on this one, given that we know where we are right now, all.

B

E

I think this elementary marshal for any sort of interest.

E

Just like it's more than encouraged is well.

H

Isn't it the same for troika today? Yes, I.

G

Don't know where I get it right. It's a good question actually.

D

G

D

There's two there's: today we have memory, try get array and we have read only memory, dangerous, try and get array, and we talked about moving the dangerous ones to this memory. Marshall class. This isn't actually dangerous and in fact, I was proposing creating it as an extension method so that it would show up on read-only memory, H star right alongside and try and get array.

O

On which type is to get away because it I can't find it drag it around or emptied I try get array. Why.

A

E

Index, can you.

H

Right now, you probably indexing the old packages because.

K

H

Pretend to be newer and Wes doesn't want to fix it. So.

E

Why don't I see new things in master should reform that crap good morning.

D

Fernette core app front gate array is implemented in core CLR.

N

Should still be there all.

E

Right yeah, we to know Jimmy because I have to this few times and like I'm, starting to distrust the data, the mitigating I also.

R

E

To you, the thing.

R

Inappropriate I'll check.

N

The few minutes and I'll be back in a while, alright. So then.

H

The conclusion was that so the dangerous one or the dangerous one is somewhat slow. So there's no controversy, there's no problem. We have dangerous API sand, they I in memory macho know they put senior citizen dangerous, get it guys. Oh, let me keep going so the dangerous one is in Marshall we should like now. The problem is that we are proposing that we will add this one right, which is not really dangerous, depending how you look at it, but this one is equivalent to try get array. Yes,.

D

So I think not now that I know, we've renamed span extensions to memory. Extensions I think this one should probably just live in memory. Extensions.

N

Both of these things right, yeah,.

H

They are still a bit dangerous because they let you access data outside of the memory slice, you're.

D

Not required to adhere to the offset and count yes.

G

H

Sure I classify that as date. It's just well. If somebody passed you, you know memory and they want you to write to some slice, but now you'll fish out the array and you write to something that they didn't expect you to write. It's kind of dangerous, too good.

E

I mean that's me, the exact same ballpark as any of our string or a mess.

E

K

You're not doing.

E

Anything dangerous in your question. You just get so.

H

That's your it's! You know in your code, it's problem in your code. You passed around in these indices. This is I created me. You know, like a small section of memory to you. I expect you to only write to this one, but you wrote to something else now what the thing, when your method returns: I notice, that my data is operating because you.

D

Were right, it's not really any different than an existing method. Today, like a radar sort that takes an array offset and length if a radar sort, it could certainly choose to ignore the offset and count that you passed in, even though you passed in the correct, offset and count that you wanted. I'll call that, like dangerous sort.

N

C

Have a comment from and a portal that he's considering as well option of war returning pool, but it's look free variables. You know free health variables having Apple out stopple yeah.

N

F

Not opposed to doing this.

F

C

Point being that you know, you will usually not need to deconstruction. Let's call this string.

E

And we could do that I, just I, don't know I'm, not sure you are helping or hurting, like maybe I'm too new to double's. That I don't find that particularly.

Q

E

Some definition of fair I think couples are getting more useful in return time position than there are in all positions, because you can deconstruct them another thing this one, it's like you know, you have a variable and you have to say second thought.

H

Well, no I think the person who made the comment is arguing that deep construction also works for our parameters, which I'm not sure whether it does or not. I just don't know. Are you sure it does.

E

G

May be wrong, but I don't know, look like so tactically, oh I guess you just say. Maybe.

H

B

H

You know, assuming that it would work instead of you having to write out VAR value out of our offset out of our account. You would say out open parenthesis.

H

You know value offset account closed parenthesis.

H

You wouldn't have to like name it segment.

C

Sorry topic I think: don't.

S

R

It yeah because they can.

C

Such as that you can deconstruct and recall out and then string crowd of sentient count. Do.

H

You even have to specify then type I, think when you say by, but in general, for for tuple, you don't need to specify the type types.

B

E

This is the one we can all understand. This is the one that.

H

Yeah I wonder if, for the deconstructed hypothetical syntax, you even need to say power.

E

But then you would have specify the types right so the neck is, you would have to say. Oh.

H

I see what you're saying yeah, maybe you have to say bar then.

G

You have to like make this a declaration. We have to say hats.

Q

G

Q

D

E

For and I'm like, okay now, I'm, not sure.

E

All right honestly, I would say: let's just go with this one here, because it seems to be the easiest one like I, don't know, I just don't see how it topples, particularly.

Q

H

Yeah looks good to me.

F

C

um Remember, X, tangents or exhaust exists, or we can upgrade it. Let's.

H

The span extensions, that's going to be renamed. Okay,.

C

We're gonna rename out and.

E

You're saying try get array already.

H

Yeah, try get that I exists, but it's not an extension.

P

H

It can be on memory of T versus this. One cannot be on memory of T, because it's specific to memory of char.

E

But you can declare this either way. I write.

C

This kind of on memory of T you want it on a memory of char. Only right, so you need specification. That's why needs to be extended. Moments are.

E

You saying it's okay instance, so.

C

E

Its aesthetic method that it's not an extension as well as it was it's okay,.

C

So I miss the discussion around the renaming, so we have plenty of.

I

Plenty of Hispanics tangents in there so we're.

H

Gonna, basically so it was last week we decided we want to just have one type for all extension methods. Instead.

C

We're gonna go with a more at highest level or what why not span extensions then.

H

Oh because there are more types than just span, so it's weird to have span extensions and most of the extension methods actually not for span okay for memory and so.

I

H

You measure J we're seeing major for memory. Yes, except in this context. Memory means that DLL I'm our image. What yeah, so the type is called memory. Extensions are.

D

H

It extends type code memory, but because it lives in system memory that DLL. Oh, oh yeah. This is just too rigid.

T

Okay, just second one is extending extending memory as law read on enumeration yeah.

H

I'm just saying like how we, you know the reason for its type being called memory. It's not because it's X ends memory, but because it lives in memory that my CI seems fine of everything you want. X, 1080 numerable is not even marked as extensions, but like.

E

You know exactly.

P

Alright, so then let's go that.

H

Jeez my iPhone is using so much power since I updated to the new OS running legacy. Harder, yes, I know: I. Somebody told me that I need to update to the new hardwood. You want a 6 pass correct now, I'm on six, oh yeah, 6 plus 2, not even on an S, so correct are.

E

F

Territory, yeah.

E

F

H

I know I know that.

F

Video stuck yeah yeah, that's it's a thing. Oh! You.

B

P

So Chris, if you want to do that so.

H

Yes, so at the last review we talked about this API. It was rejected because it had overloads for span of bite like specialization, overloads and also had some constraint to strike. That is not necessary, so I just removed the overloads and remove the constraint, or you see you even your comment. Is that looks good? Why do we need this truck cost rate removed? Why do we have the byte overload removed.

C

So why do we need to stripe removed.

H

Last index, oh.

H

There was a third comment: are you like sending some signals? I mean.

K

Oh I'm trying to write.

D

H

Eema, listen to my people. What was your third comment? So I was distracted. Somebody was humming feeling so good to show me that your third comment, my third.

F

H

There is Oh last window index of le this last index of any added. You see like everything all your consonants are now resolved by.

I

Going Jensen was that final shape.

H

That's a varial implementation. We actually don't care about these methods. Working.

A

E

Partials in my head again through a head last index off any velocity next off, when F span span of T, either ask for senior. They.

G

May do the same thing for you.

G

F

E

Is it all pattern and you only go up to three pages.

H

It depends for funks and actions. We went to eight no.

E

I mean like for the for the parents overloads that are not crimes of religion.

F

E

Autumn, implement a movie stack, a log and then all the other one stuck.

B

Alec would only.

F

Once interface arguments.

R

For like a format, string and stuff, like that, we stuck out, we have structured and push them into what.

H

R

The fixed arguments so.

E

Like Paula Deen's on this finger, I suppose your stick allocating and we don't expand with two and then call this one or like. How do you do that? Oh no.

H

I would assume it would be optimized implantation. Then, basically, you know finds value, zero and then tries well yeah. This one could be actually vectorized. It just creates two vector masks when we value 0 1 with value 1 and then search is vectorized.

H

Ok, in fact, that one probably can be implemented in terms of glanced index of a single value. It just finds this. You know value, 0, re, 1 and then returns. The largest index could be, ah maybe that you kind of want to do it in in like in parallel. If the span is very long as value 0 doesn't exist, it would be inefficient yeah. It's probably needs to be implemented, but using vectorized search.

E

So we're doing a specialization for fights or we just work one so.

H

You know people have argued that we don't the JIT is so good. They can specialize it for us and they've done measurements, and it looks like it's actually the case.

K

H

If we ever discover that we do have a problem, then we can just add the bite overloads.

H

You should say it looks good, as proposed after incorporating my comments. All.

G

Right so now we.

M

E

Time them for 1030, well that immediately that 30 solve crap.

I

We won't look at it, maybe first ourselves.

R

I figured out why the catalogues I've uploaded one of the aps is the exactly the reason why I'm, what I'm doing right now on the side, which is trying to fix the core sealer build, the core, sealer boat, hasn't actually producible for a while. So you haven't got the new API spa because.

E

R

Have to build I mean.

E

G

C

Actually I think I promised I'm gonna copy delight this proposal to the top and I didn't do that.

L

I'm just trying to remember the last purpose, I know be already pass it, but is this loss index and it's often about beta now April times.

H

Last index, with no label types you mean when the T is inaudible.

H

Yes, as long as the novel type implements I equatable of T, which nollie boo probably doesn't I, don't know if it does or it does it does. Inaudible of teamplay metallic weight is ours. It.

L

Means you how to specify the type arguments, because it's power, T.

L

Okay, then still it's not Buckley or non-alignment. Well,.

H

So if your span is span of Nalla Balu of int and notable implemented this interface, that it doesn't as Eno said, then it would just work. You would find the index of you know the right knowledge value. It could access the value in the span. You would get normal value, you would still have.

L

No check upon your neck, but then yes, if you, if you, if you are looking for the value and pass in as only Isis and like volume, I guess prom will do the conversion right right.

H

No because well, you saying the parameter that the value that you're looking for would be Nala Buland, so you would have to pass inaudible int and yes, there is automatic casts so because.

E

You call this instance method on that same span of nullable of int. Let's say right and then you pass in 42 for this, and the compiler will convert that to T, which at this point would be in question mark and then yeah so long. The type implements I equatable. It would find the right thing. I mean.

D

The way now that works.

E

On our side is that it's not like DB, inaudible right, where I did over now up over, not now like you get the right, which.

H

Is interesting, why does the inaudible of T does not implement available of T? Let's he's weird me as well: you can open the new issue. No.

E

You know why doesn't because it doesn't have any operators they're all listed by require.

H

No, it doesn't because then the T will have the implemented in an incredible.

E

There's a discussion on equality on couples. Yes, they are proposing that they compile that will effectively rewrite them in such a way that it says if the first one equals the second one at the second edit first link, that's the first one, second one second one to throw one third one and so on also generalizes giant expression, essentially because it's the only way they can make sure they call the right operators, canada, my equatable on top of Teeter mm-hmm. So you said.

L

You said the not able doesn't implement I commute table right.

L

So then you kind of use my label with this API correct.

B

L

So you can use it.

P

L

To a mimic, what is done in length ready to copy this and add question mark for all these API is to sort of I. Think anyone by Ling Ling has the the two versions of all the overloads where one is written: a label and sacrimoni spit out the thing they're. Just such bullets in my max or min or.

E

Yeah, they do not show all of them because of some they don't have to.

H

Bet anything that does comparisons they do so one additional way to solve this problem is, to just add an overload that takes what is the type that actually provides like that equates to things passing in a comparison compared. Basically, okay, it was a hint equality. The Equality cover exactly.

H

But honestly I'm not sure whether that said it would be a linear correlation area where I wanted to start an olive on Cena in a span.

H

Maybe the people store notables in a race. Oh.

L

But if you are L, if you have a very malleable ends, just quite come on, but it's kind of wasteful odds for database people is like whatever they do now.

E

I make a thing in Lincoln, of course, pretty frequently because of the way you write the code, but you would say like something like select this thing to do a try cause. Then they don't to say where this thing is not now, but I would say that by the time you call to array or like to list I, don't think you have like a sequence of multiples. Left I mean that will be weird.

E

um Even the databases I mean I've done. These amount of database programming in it I really had a ton of novels because most data structures- you already have that ability build into them because it's reference times anyway, and you try to print them and then you have effectively only the atomic values. Like you know, I, don't know birth dates and stuff like that. That is not Apple, but then they're, usually properties of some larger objects. But you really have like an array of you know.

E

Nullable ins or available I mean to Crystal spawn I mean that you can I think it.

D

Is no way for us.

E

To provide this API and efficiently I mean the only way for us to different edibles would be to action over those inaudible consent. Ecology, comparable is horribly inefficient because we are going to first this patch for every single freaking comparison right so thing. If you care about a label being first us, you.

H

Would have to have you you know, what's what would be in a relatively easy way to implement it, but you know you create a struct that contains Nalu.

H

Yes, you implement the interface on this chart and as long as you have the right layout, you just interpret cast the span to the to the span of those strands that is actually efficient and it would work. You just need to be careful about padding.

H

B

H

Depends in your like original array, where you have the the nollie balls, you probably have padding and.

F

The Trapster notable example: it's like a sea full.

B

F

E

I mean it'll, never be the baccarat right, which will be better than.

H

You can do so much with reinterpret cast. Yes, something.

G

A

Yourself so many different.

H

A

A language for that not.

C

H

Something something's he ought to think it's not c-sharp.

H

It's called dangerous cast. What what is the method? This is a method called unsafe thought, something that's in forecast, no.

E

H

It and I think we have it on span exceptions as well heavy added something horrible non put it all non profitable, cast yeah. That's.

E

Almost as bad as he preferred, like underscores angle brackets, let me interpret cast and next day cast. We should.

C

Have a language syntax for it and then those guys come along and say it just work in C and we have to remove forms. Yes,.

C

We do it stuck again, I guess, yeah.

P

C

Well, you kicked out Stephen all advice or it's okay,.

D

N

Can what you are.

C

No I am counting, but you don't know when he's kicked out. Oh did you? Can you rejoin yourself I thought that the kick out was like hard that, like you know, he wants to just.

C

E

You don't have to stretch the case, not a little boy anymore. I really really want to do it. You can do it yourself now.

H

I would say if we discovered that this is like. You know people comment that it says scenario. Then we think what the right solution is mentally interpret cast is a bit like walkie I would not say well. These are the comments and says: geez I want this API. Now we will tell them they work around, but then we should that the bomb that I have this is that it's basically it's.

E

B

E

Like the black put of us getting that riot, it's very high, it will miss a few overloads here and there I'm sure and then for those cases is like it. You cannot buff yourself, but just doing the thing you don't leave them in the API is actually.

B

But that may not be too bad.

E

Yeah I would be willing to say right now. I, don't think of this. An area until proven otherwise, like I, mean arrays of malleable, should not be very calm.

H

Zero or one element, so it's an array of arrays, but you have a concentrated. This is what multiple is it's not quite that wasteful Martin should implement I in a move.

E

She's, not lazy, design.

C

You want to ask him just to write books. Oh.

M

I'm, a quoting this famous statement, but yeah there is those who can do those who can oh yeah, oh you're, you're.

Q

Next Superman stood today.

C

All right might be waiting around the corner. Oh, how.

H

It is, you will see how many people after you know, like I'm gonna file, an issue implement a new rule on multiple of T, receive lots of votes.

E

This is what's going to make you WP great again, then.

H

You can you know if it's implemented in the bluffs to it T you can call link methods on it can say first or default. Oh God talking about efficiency.

M

G

When I sit over here on purpose, folder.

M

To you feed when you do that.

C

M

All right so Oh more minutes a.

C

Needed every fresh feed refresh: oh you.

Q

C

Copy pasted the like this stuff, someone.

Q

Yeah, that's right. I.

G

Remember nothing.

H

So cool: what does this Apia do? What is it for.

E

So the way before the factories work today is so the scenario goes like this. Imagine you are writing something like yeah right or some llama burn. You want to allow your customers to effectively use any database back-end right, but what you have to do is you have to create, essentially, connection objects, command, objects, reader objects, and you don't know which ones. You can't write the new statement yourself now we do have instruction. So we have the DBE leader, DB connection, the DB command.

D

E

Something needs to be giving you a factory that gives you one of those. This is what the DB provider is now the problem is now or how do you get the DB provide like the elected like the factory itself and I don't want it. You obviously provide effective in my own code, because that no means my love ever has to dependent every single possible anyway. Let implementation that exists isn't so what I'd rather do is I basically say. Well, you know you could just write.

E

You know one entry method that accepts the factory, but then the problem is the customer has to new it up and for the most part, what you do is your string based configuration, so nearly they give you just a string that says sequel or you know SQLite or whatever the case might be, and then, by the time you actually have to do something with that. You know with the database. You basically go to this type, provide the string, and then you get back to factory.

E

So it's effectively a global registration for the basic map stream is to hopefully providers. The way it works on button and framework is that we know we come batteries included for the things that ship in the framework, ODBC, sequel, whatnot and you can extend the ones that are available by writing sections to the app config file. So we go on core. We don't have a configuration right, so there's no way for you to register those. That's where the new API is kickings.

E

You can write some code, it says, register the factory under that name and then you would have a model where you know the application would take a dependency on the SQLite package and then they would call SQLite register and then SQLite just calls these api's with the right strings and then registers them and that's whatever else so.

H

Why is this method? They are static methods why? Why aren't they on DB provided Factory? Well, did Nevada factories already exists and on a framework that have already has shipped and we can audit API students instead.

E

No saying there's two API: it's right, there's the factory, yes and then there's the actor eats yeah. Why don't we in fact, we already shipped so the weight on a framework ship today is these API is exists on Don and family handset.

H

All of the methods- yes, a static method. Yes, they could be on DB, provided Factory.

E

Yes, I'm saying it's not the design that they have said that they have done in the past. So then we'll be reviewing it. Okay,.

H

Okay, sorry I missed it. So those.

E

Are already there so that you have that you have get facts and.

P

Links a nice good.

E

Kind of 1/2.

H

So the distr okay, so you can register I, see.

K

C

Me drop Stephen of.

B

Course we did out ice.

H

B

Actually, number five you're, not all.

P

E

I think mo conde, there's no trueborn the cost. You definitely have to double the last to it anyway. um Video is stuff, of course,.

O

E

So I forgot what the reason for in variant name was but silly boy.

O

We want to call this provider and very but.

H

Why does it even like? Why is it so complicated? Why is it called in variant name and not just like any ID, for example? um Well, I mean that's.

E

The name they've picked here.

H

Right so I see it again. It already exists. Okay,.

E

And I think it will be invariant name because apparently there was there was some reason for that, because apparently the provider has a name as well, but that's not the right one. That.

H

Was something then it should be called the right name. Oh that's.

B

A prophetic very name: it stands for.

E

So they have these two things: the overloads I.

E

Guess regice unreachable, the unregistered factory I suppose.

T

H

So one thing that is not consistent: it's called it's called provider in in variant name in the existing methods, but it's called in variant name. Then you let us.

G

You should just have the same.

E

C

Then we should find out if it should leak into the last method. Name get faster in variant. I also suggest that these two should be alive. I will probably call this.

E

Factory type assembly, qualified name of this vector a semicolon because you're basically admitting it equal tightening, also.

H

I I wonder like this: a generic method that takes both in variant name and the type of the factory. Why do we need that like? If you know the name of that? If you know the type, then why do you need to yeah? That was the problem because effectively is.

E

Independent, yes, so like apparently it so the way it works is you can register this equal DB provider factory under the name Christoph, and you can ask for that. So if I just give you the type, you don't know what key you wanna register under no.

H

No, this is try get factory method right, it's not about the registration I'm, trying to retrieve a factory right. Well, I already know that is the type of the factory. Yes,.

E

H

Do I need to specify the name it.

E

Is in you can infer one from the other, so somebody may purchase at the secret collider fact: 300 Christoph! Yes, you know so the try get one. You want to get the sequel one, but you don't know like like just just giving the type name secretly provide a factory. The API cannot infer that the key was Christopher. Oh.

I

E

I

Well, but the I would only want are just the same type under more than one aliases is that come on, like that's the.

H

Implementation.

I

H

It's a factory like does the name change semantics of the factory like do I care which one I get, but if I register at the same time, under many names, why would I care which so.

E

I guess the way this works in larger systems is you can imagine that you know you have an application right there. You have multiple different. You know. Parts of this system, like you have a caching layer and you have the actual back-end is and then you know the backend in v1 uses SQLite the backend in v2 uses sequel and then the caching layer slows it's stuck on SQLite. So you need to wait to say well the what's my back end for the caching.

E

What's our back end for the actual back-end right, you need different keys for that and this technology's, our you know up to them to swap them out right.

H

Yeah I still don't understand, you specify the name of the type when you say type like you know, I liked it yeah like here you, yes, so you specify the name of the type. Yes, what does this invariant name change so.

E

I think the cemented way, I think what is API it's effectively.

E

It's effectively, this same guy is here with the additional class build it.

E

That's all it is you're still asking for the register provider under the name and then you're saying well, I expect it to be the simple one side. So I try Constance to a single one, succeeds: okay,.

H

So, let's try it so, let's assume we remove the string from the Savior. Yes, so what the semantics change you can? How would you look it up because it's basically like I would find all registered types that have the identity, factory type.

H

Unless you can register more than once the same type, the set would be one and then I would just return it. Yes,.

E

But the problem is so I think. The way this is supposed to work is like the caching layer has a key, that's specific to the caching layer anywhere in.

U

E

Yeah, which is invariant name way, so you don't want to return somebody else's provided factory right, because this layer needs that particular provider. If that's all the things they're.

H

The same type, why.

E

Not like other the factory stays stateful well, but the thing is you don't know whether it's the same time right, you're, basically saying I, wanted I wanted I want to get the provider factory for the particular key caching and want to do some sort of optimization if it is sequel one. So that's why you're asking whether it's the sequel, one essentially in the same the same thing, if you want to say, try to return false if it's not an actual sequel server, one. That's.

B

60, yes, cool I thought.

H

I passed the name, so did they pass the SQL light or would like they would pass in a key, no caching layer, right and then I would say no no to tea factory. What do they pass to tea factory.

E

uh Whatever the type name is for sequel server, if you provide a factory that looks like we are methods like so I grew that it's weird I, don't quite know why you, the whole point of this API is effectively to not. Have you deal with the actual provider, Factory right, yeah holy tears that you can use. You know loose types and strings exactly what.

C

You have to specify the type because I can as well. It called a gate factory for the invariant name and then check like you know, is this type or that type to do the optimizations right.

H

Well, this one.

C

And then you just get something back so.

H

I can imagine I can imagine. There are two reasons for it. You know why this could actually be useful. So one is that maybe you have a hierarchy of factories like it's deep, correct: it's not just one level. So you know what you pass to that. The factory is like a it's a base type and then you registered multiple subtypes and you're.

H

Getting the basically the invariant name, selects one of the subtypes of your base type and the de Factory is the base type I mean it's a bit wacky, but that's why I would imagine this idea would be useful. Another one is for some reason the factories are stateful and you have multiple of those registered.

H

You know a single type can be registered more than once because it has a state and then the invariant name kind of this Act accesses the particular state both of these signals and wacky and.

F

C

So there are some motivations from from before it seems that actually they get registered. Oh it's factory is flowing if it doesn't exist, so they want to devote it a no flow inversion. Oh they mixed it up as well with the casting I. Think I, not sure. If I'm that keen on the you know, Cal stinkers input, he'll be just try, guess factoring exactly you know, and the.

H

Out parameter is just DB provider taxi yep.

C

It's kind of trying to do two things and bombs.

G

See their make sense and then get back to it very intimate sense of using just all the ones.

G

What will we use? The sacred was everywhere.

E

So PO should be called get provided very.

L

Understand any precedence in this vicious of factory there's a pipe the factory type. Why is it type and not generic type argument.

P

E

So the reason it's not that so that you don't have to actually take the pendency of the time.

H

It's the same thing that we have in other layers house somebody make past you. You know the type instance which.

D

Means they have a dependency.

H

On the actual type, but you don't.

L

Yeah but if I change to logistic factory to be just a factor of T yeah, no, you don't have another C.

H

On time, you have B to call the method you need to have the type to forget it to specify the argument when you're calling it right so the reusable library, this library versus.

J

H

L

The color it needs.

H

To know has it have a dependence.

L

So if they do type as build of strength- and now but is this- is the purpose of this API to sort of I think have register factory in the weak form when there is one D string overload one above this distri really.

P

L

Analytical question I think.

E

I think the primary use case is this: if you read it from config, because you have the string already, this one I think is more than area. It's like it's so like in a snit. They have tons of that. It's basically like configuration Xcode, let's you're right code, to do that, so you would um logically what you do is you would probably build some sort of, like extension method, similar to what they have for 4-h they.

E

Never they have that use xxx, essentially in their API signatures and, like most of this stuff, will be composed off of like strong type something's right, but then some of the core API, the blue, the registration will probably accept the system type. Let's drink,.

H

I mean the two methods are kind of interchangeable, because you can get type from fully qualified name and you can get fully qualified name from type correctly. We.

E

Could say strip this one here it just said. One of the challenges of this thing is like it's not. It's not super easy to get that thing, because if you say full name, it's not the one you want. You want this company as well, but yeah. Here they DB guys. We thought all.

B

S

Rejected okay, thank you for coming sure.

S

H

C

D

H

You get you can do this. There was a comma. There was a comma missing in the comment we injected the proposal.

E

So I think I I got the scenario. Let me just say what I what I said it earlier? You can correct me if I'm wrong, so the the primary scenario for this API is essentially that you want to have things like EF other things they basically need to access. You know need to construct. Db objects like connection that commands meters. They don't want to have a static dependency on the access that knowledge that you use whatever, and so the challenge is.

E

We could pass around the DB provider factory, but that's very inconvenient, because if you really want, if you want some aesthetic registration, you can go to it and you give it a string and then basic.

J

E

Back the factory right and so in, but if everybody have that system except that, the only way to get any factories into that system is variant, configuration which doesn't.

P

E

For so that's all the energy capi said love it too. You know for the basic put provider factories into that thing, given some names that that.

O

J

Be think I will change all that is that we all need is for yet or thank you. Okay ice mostly work other up. There I see yep when we built the complexes so we're out.

V

There working I mean yeah, we purposely didn't use this or any variation of distance, I. Think from our perspective, you know we don't like this very much at all, yeah, it's like useful, but from on back comp and stuff, that's already written to use it and want to change. It makes sense from its what I.

G

V

Oh I mean when we did the initial.

B

D

V

They'd, a common like years ago, I explicitly excluded nice, but yeah, but things have changed right now. We want to support benefactor, make sense so.

E

Then my only question is like you're just talking about a few things, there's some naming alignment any. What we should do like this is provide a very name which, what we call these guys, also providing very names and those.

Q

Are the things.

E

The same thing right all right, then the other thing is so. Why is why do we have like this this this type in here at all like? Why does it matter? Isn't the whole point? You don't have the dependency of the time so.

J

This one this one, because it's an app that allows you to type in as I say the provider factory for artistic statement. If you want to have a sequel for a factory right by altering work,.

J

You know how about a nicotine patch.

V

It's a perennial problem that parameter to it, which is my least attitude, is in here whole second work. I know it's going to be so time, but the hour per day, so base type that I have to create permanent I have to crystal at the base time. Yeah.

H

But if you know the type, then why do you pass the name if I know the type I would want to just call a method? You know the textile parameter.

J

Specifically right like secret for apartment and get that I think it was like. If I am using my sequel, then you say already a specific type. If I know that I just want to get the yeah.

H

Then why don't shoot like have a method that doesn't have the string parameter.

J

So it was a discussion really really or because so this is. This is a mapping. I thought you, they are like alien acquires half of the earth that have a its modern name. I mean they there's nothing. That important say is if you try to use a specific. My own name is as a convention that would follow yeah, but there are also racking providers so, for instance, for scenarios like interception and profiling of video net say people like France, boba and Orrin, technically rocking providers or something there. We.

V

J

V

If you use this with a racking provider, help you better not have tea factory, be super fine yeah, so maybe it's better to just north as a generic. You know.

V

We actually don't want people consuming it to be tight kind of one of the reasons we usually say. P is occupy yourself, yeah.

E

So that's that's the exact Wi-Fi on it. We're to mean, if you need anything.

H

I'm using everything, I think.

E

H

Been friend up with having dinner I think it would be easier to understand like what is the holistically the whole API. It just deals with generic base type that DV provided factory and everything single API is like this, and if you want to dunk a student cast it to whatever type you want, I mean.

V

Yeah I'm fine without it I mean I. Thank you from a consumer perspective. We never see or care about the generic. That's why this pattern is used because you write out whatever then the Gerry generic is always a bird. So you never see the generic yeah.

H

But my problem was not that you know syntax of specifying the yeah I know that the inference works generic inference. My problem was me: as a user that is kind of you know, I, don't understand the whole technology I'm, like I, already told you what type I want. Why do I have to give you the name of the this I told you but call me Mary. No, no I told you the time, because I had to pass an out parameter that sensitized everything.

V

That you would not want one thing that you are in effect want one. In most cases, example.

H

There's nothing.

V

H

I'm saying I own Elsa, but my mental model, I kind of think that they are one-to-one and I wonder why defect would you have this API so because, and my mental model may be wrong, I know.

J

Your mechanism, if you already have the device back, then why are you like yeah? Let's have that? Finally, today from it exactly yes, so I think from that perspective, it's okay to have also I want to be more specific. You don't.

E

Like the only thing is like, what's nice, about not having the generic, it said this this code compound yeah. Otherwise you have to this thing and if 90% of people would do that yeah well, it seems superfluous right now, because it means you really want the secret one. All nothing prevents you from saying: no, it is.

Q

Whatever the thing is right, X and then, if it's using s under the it right, do whatever you want to do right. Yes,.

J

First I want to do is API in purple is, from my perspective, nicely PAP like I, don't like the fact that it actually or whisper- oh yes or not, but let's recover that as possible is.

E

Like well, you could handle the examine it's just that it's really bad to do that, depending on how many times you have to forget.

C

Factory right and in general, our you know our about darkness like if we have get mad at try method like it's, not you know, something's. On top of you know, there's this basic additional value of casting comp about that which is, like you know. Suddenly, it's kind of like general pattern like get my top try method like a place to lunch, so.

F

That was a just east of the genero and then, if you really want to cost you cause.

E

Then the other question was register.

F

E

This is what would she be understand, factory those well and then avoid what causes get, providing variance. That's how.

J

C

Like and one more of the the factory type over in our visa that should be or not a factory assembly, qualified name, it should be secretary type, some Bigfoot fire that actually pieces to make.

O

F

Let's be the war.

F

B

V

Named providing everything is to get this.

J

What we have somebody, what happened is at at some point: I was high high without mercy from the guys, like the class itself is a factory it has its factory mm-hmm.

G

It provided factory.

J

Of it, you talk to me resisted everything that you can possibly release the face properly, but.

H

V

Yeah only could be consistently not way to if I didn't.

P

Yeah, when I'm gonna change that.

V

In existence right.

L

Then I think this would be factory tired, is under.

E

L

Really really want just think overall, yes,.

E

Let's the other question like: why do we even have these two, like you ever have tied in your hands anyway, I mean the whole point is all streaming. If you come on out.

L

Come on this one out, I guess this wouldn't be a so.

V

V

Think if we want to preserve the backward compatibility, one of the one of the features they have, what you didn't have to have a hard reference to the right, which is kind of why they were registered in conflict in the first place of why you had an assembled name conflict. So if we want to preserve that where somebody can register it without having it having a common reference, that's why the spring one is useful. So.

D

I would argue that.

V

Wanna we want to trim back to the minimal ap like that. Don't want you coming it out yesterday, but.

P

If you do make sense so.

V

L

V

Was argued, custom Quebec right.

L

V

Might have a part reference anyway, it's not a requirement I, don't in that case, having them call, you know, are involved whatever again, whatever name.

P

It is kind of silly so we input along as well. So if you today, but if I don't have this, you would just say it type.

L

Is not concrete, but it can be any type you can adjust exactly.

P

Table as a straight man, that's effectively what the customer has to write, which.

J

Wouldn't be horrible yeah, the way we started.

V

All all these initial can be trimmed down in various ways. So, oh ah this is sugar. That's okay!.

D

V

I, don't have a first order of what should we have enough air if it's, if only a time the string or boat.

E

So the only reason I think maybe not having this one may be useful- is that up that spring here is super easy right, because, like this is very specific, and if this guy later don't Road has to call basically get tied, then the bangle may holy. Look at the stack is like. Oh, this is about implementation rather than this is in your. This is little in your code, like you're, basically top of state in on top of the stack play. It's.

G

Just like it is.

J

E

J

Loss, it is an area that mostly they say, like a launcher application that that's what the registration of all they provide us that everything's going to use and really starts enforcing it all they're not going to know how other private practice one doesn't.

D

Know anything it.

J

On nothing, which is which is equivalent to this and other than working on the framework in which all those between said you.

C

Create your custom, complex.

J

Basically, yes, that's how lo launcher would know right. You know the framework at the time this was from computation. It was just me today that desire, and only when you called it faculty.

V

J

So in fact, the.

V

Resolution time, when you need assembly to be available, let's.

H

Show but I don't know if for better or worse because it delays it till you start getting them and well.

E

What is true, though this is you would so. Let's say you have an app today, where somebody has a configuration file, the bogus provider, that nobody ever asks for 3 an application would never fractions that if you normal this tool, startup has the basic column type a type, and then they tell us well then,.

V

You visit rate a everything.

E

V

It's also in the past, it's been very common to see people register lots of these things and that.

D

V

One or one or two at the time, in fact,.

D

There was actually.

V

A very bad bug in the.net framework, where, if.

V

They do it on that shift like a sample or a provider the sample or something wasn't well I'm happy. It.

D

Was anybody but yourself.

V

Anyway and then it had code in there that loaded all these evilly when you did idea like that- and this was like massive pages for us to get out there breaking changes- you know somebody might be using these references that you know so as I I don't know a lazy part. Is this good in my mind, but I? Don't care I mean.

H

Honestly, there's not much negative and involved in having both I mean like how much people, whoever is the owner of this feature, should probably I.

E

Need to leave. You have another places where, if you look at our designer attributes, they're the same thing where they happen. If a constructor that takes the time because it takes the string for the same reason.

J

Is the one that they said I it because provider factories are supposed to be single constantly all of the instance you and you have that attitude you're getting. Yes, you sing. Instead of having the type you would have the actually yeah, which is horse. Photic where's, the the federalized.

P

Amended for me, yes,.

V

Oh se there's a first one, you would say: sequel a factory instance a new pasture. Now the instance thing is purely a convention but mention that or if they're going to work correctly. In that framework they had to follow that convention. Now it's possible to write providers and use it when the airport or whatever the don't, because we don't care about on a crab but I, think it's reasonable to say that any any provider factory will have a donations, I believe otherwise, the fashion additional factor equals the yeah.

P

V

It is it's a singleton suppose missing by.

H

The way I just noticed that first method is a expansion method. Yep, it's not a big deal, but it's kind of weird. You would call it on a factory. The method is called the register factory and then you have to pass some provider in variant name, not a factory I.

J

Either the mister factory yeah.

H

It's me, but it highlights the issue correct because you have something like you know. You have a variable called factory and you called register factory and then provide a name. hmm The camera gesturing provided.

V

It's really a market, were you doing having a party to that, you I mean.

E

We are literally herbs factory from all these things because you are on the new quarter factory, so I like there's nothing else right there. The trio's iteration of the.

J

Design he just convert against factory right. The other point I think a France is mentioned for equal summers from me that you should have a overdose that don't take a mile.

J

We heard from the Dyke thanking I'm a nice percent of the Hawaiian. No, it's not that we not, but if you remove from the reality, there are examples where that isn't so there is the sequel. See yes, doesn't follow the the convention, the seaport city provided patterning. Also, all the rapping boys as I was before do not follow the convention, but every other provided every CEO.

E

J

Like is it actually the type name of the factory? Usually it's the.

H

Fully qualified name, what is a nice place? It's a nice place, yeah.

V

H

E

Doesn't encourage the name of the guy said sequel to Sao Paulo, so.

H

What we could do, I.

V

E

I mean it may not be what you want, but let me about what we could do is you could say you know, make it optional right and say: if you don't, if it didn't specify it, we just say that thing right. You know factory typed up next, a lime, spider set and that's not unreasonable.

J

My only worry with that this does it, for the rocking providers and ideas is always under the.

V

Sea I, don't think we should I think I think we need to accept that good thing is that right, oh very well, known I mean very thing, but there's nothing that stops people in the old system registering under a different environment because it just put in a complicado something very and then they say, give me that I'd marry, but you can have two different: for example, sequel PI providers registering for two different and very I haven't seen people do that, but I think just looking for the fact that not everybody calls the prevention fact that there is no strong semantics between the two there's just this convention.

V

It makes sense in my mind you just say when you're racing you tell us this, and you tell us that and those two things together, not confuse it by saying. Sometimes we refer, but what it is. It's.

C

Basically observed policy or Convention, as you say, and suddenly we trying to bring it back to the API, which is kind of, and it's not under person that feels weird yeah. You know if it would be like the design from the scratch. Like yup we're going to do this convention. You can overload that something special I could see that if we work with very chaotic property.

J

C

Mean does it work.

L

This is all, and this register factorial behavior is like cry or really hard register and so exceptional. If there is duplicate, the idea is a spell.

J

At London's, yeah.

L

Nice, so what the exception do? So? No, no! It's a watch moment. So this is its author already set.

G

E

Actually, probably better than what we compared yesterday right versus first one.

V

E

Honestly, the worst design, usually because.

V

E

Hard even about first.

V

One and the reason, one which really makes sense in this cases as a stay you okay, was playing out as wrapping providers, and so it's very common, for example like like, if you take the case in the concrete file in note and vomit framework, a very common thing to do would be to put in your config file something that registers a profile as rapid provider, and then you run the application and it runs with the profiler. So the idea here was what wins is basically the same.

V

I put something in here: it's going to overwrite, whatever it was there, the profiler you.

G

Know that makes complete sense one having a place policy, monitory policy.

E

I mean you could argue that you consider the same thing by calling a group you're, certainly gathering but like seeds. Think if the rapping is a common scenario, it seems like.

J

Also, it was unregistered I consider those.

H

Like do you want anybody to be able to endure it, a stir, or only the code that registered I.

V

Don't know that there's really any sonorously happen.

V

D

V

H

It may be one of removing them because it may be dangerous for, like random code can, like unregistered providers, I mean. Do you even want that? Because I was thinking that you know if.

D

H

Return like a grid, then you have to pass the grid to other register that make.

V

It safer I think it wants you're messing with these guys. Anything can happen, I mean you, don't have one register, you can stop or register and replace it with someone.

J

I, don't we have summers, not the only one. The only one with this that you are, you are by the advanced user that that is trying to reduce the things you are already in. The try is a current method, and you want to put setup in so that.

J

It was perfect it, but I.

V

Mean I guess you could imagine out that we iterate through all the panel providers additional problem, and you tell me I, actually don't want to do this. One right.

E

To me is your name should I, don't know, think it's just my EDD anguses, like I, like symmetry I, always find it very weird when this asymmetry, but yet the only scenario could imagine is diagnostics. You really want to make sure that no cord users are giving avada. You can see whatever close up and fix that part I mean.

K

E

Then also seems very weird I.

J

Know the last one is also a nice, oh crap, so nationality.

D

J

Right yeah, if you call it faculty classes, you already get this in fashion. Are these only that then are like accessing by the table? Part so I think.

O

This one I kind of.

E

O

Here, should you be.

E

O

Son's yeah dramatic because.

E

All done type to you have to kind of know. It's the first field is it's being second and.

H

I assume that it's yet provider method, not a property, because it's expensive or do you have the name seen memory.

J

All the ignition area that I would hope that it basically no literally in the 2009 election ie I, think in the initial Europe from France is no data.

E

Table actually.

J

E

J

These the other parties to Madera canal and when does a cache version of the data level that validated every time to making changes.

E

Hopefully, it's also it's more later people, but I guess in this case, even if you have how it would have to clone one, because we don't want to give you the existing one. So like this API is probably more expensive than it, then this one would be just from a few locations that point so.

J

You're currently currently, in addition, uses yeah and I, think that was deep into Google depends of the world. Yeah like I, wish all seven.

C

J

C

7970 I just started ten minutes ago, something one.

L

More question about the register factor is: is it the order of the parameters the three hours compared to the other methods? Does it have any legacy? Okay, that's a good point. I will provide an action, probably the first one.

M

You could have.

E

The provider in one name always as a key sort of yeah but hey, that's the key data. One is the value right, so kind of want to have the key first and then the wait. A second yeah. So.

J

Literally a little, it is a net number. Yes,.

P

I just killed it.

J

Okay, can you add it back without the lease and I headed back was all for this I didn't yes I. Can we just copy that I.

E

J

When we made it because.

M

They're talking about earlier and I commented out and.

E

M

Affected to that, so no he's boiling the Frog first comments out. Then it disappears. One we removed would be the warm.

J

If you don't like it to be I, said a method, I was the odd yeah I think that's the one run boy.

F

Yeah, it's just sorted form less.

P

Time for more time, all right, I.

V

Think the second one you could argue to go away.

C

I think if France imagine what he would like right now there were so many iterations I say.

M

They overload all.

E

Three of them, it seems fine to me the biggest one was in the fact that it's a extension method and if we go down with this path, I actually think it's not too bad.

G

And then it seems somewhat illogical. I.

J

Mean this is here yeah.

E

Because my other, you say this is quite a factory type in San, Nicola farmhand that one goes blue.

G

Lonely but yeah one of our force, tanks and system I.

E

K

E

Like this I think it's okay to use the dust well, I think it's kind of clearly referred to yeah.

E

All right, then, any more objections. Otherwise that's it so.

J

They will say: oh I thought the you go up to the actual temperature issue. Name.

B

C

Doorjamb, honest.

J

Philip, this is the origin one okay, so in in in the original orientation of this into the framework buddy his name description, I, guess, I like friendly evening special name.

B

J

Use us, the other is name XML. Complicado is required, it's not used for anything, so that is good. So there is a final name, but that is in the configuration right. That's data and name cycle the name, so it's required a from the perspective of this area. I can think of is somebody's like how a dashboard you are showing right now.

J

J

Binary pair provided by the name, is they only when the first functional.

V

Saying if you're showing the data you should fire her, the name is.

J

Equal, if you go to machine coffee, that's what you have this picture, something right.

E

Yeah I remember that. No because that's the thing which are the earlier because crystal was saying was a copper by the very name and not name I said since I was there wasn't native already take it.

J

So my my preference would be to just ignore this thing, as there see how it yep I would.

E

Agree with that, let's go with this and see what what we get, how much we get 45.

E

Like 500 comments.

H

Well as the owner to update the top of the file and then who's who parties are always at or unless we, okay with us updating the top comment.

B

Okay with that I'm.

F

Patient anything.

G

You want to make that is already on your online okay.

C

Right I would have to be separate type of something right. Obert Eglin is a new type introduction royal board the convenience so much. What.

E

Isn't as intimidating like he grabs these things, nobody does, he all say alright, but you should just be a pure consumer. That's why I'm asking like what so he also on.

J

Say a provider as this will open HDL he's on customers filled with a computer file. Okay, so.

J

That makes sense alright.

F

That's it for today.

M

Thanks guys online.

M