Rust Programming Language Programmieren in Rust (Full lecture, German), 6 Feb 2017

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From YouTube: Programmieren in Rust (06.02.): Rust Community & Open Source

Description

Vorlesung „Programmieren in Rust“ an der Universität Osnabrück im Wintersemester 2016/17.

Dies ist die Aufnahme des Beamerbildes sowie des Notebook-Mikrofons. Alternative Aufnahme (mit Dozentenvideo): https://video4.virtuos.uos.de/engage/theodul/ui/core.html?id=ba079eff-2e2b-49cb-9cc0-15138e1da23e

Slides und weitere Informationen: https://github.com/LukasKalbertodt/programmieren-in-rust

Playlist: https://www.youtube.com/playlist?list=PL0Ur-09iGhpwMbNiVTBeHmIjs0GuIXhNg

A

Forgot to wear my last lecture wednesday, italian spor.

B

A

Exactly I know, I noticed it often that one slot of the experiment is, unfortunately, the police, but they have you actually distributed the settings quite well slots, so I hope that at least a few more will come if you think about it, come on wednesday, maybe more so that you are not completely alone. So I'm a bit sad.

A

So if anyone has two more days, then it would be nice if you come over there with me when I stand here from your audience, yes, but as I said that 's mine last one a bit shorter and a bit more relaxed, I assume we'll talk a bit more about rost community. So, let's get two more hints. First of all, about half of your project. Time is over, which maybe I noticed. I still have two weeks.

C

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Let's say we still have twelve days,, then you have to introduce yourself,, you don't need.

C

To start here, so.

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You don't have to have started here,, but it might be a good idea to start too slowly,. So, of course you can do everything in the last five days,, but I think it's unlikely that you can coordinate so well with a team that everyone really has the whole time against the time for the last five days. So I would recommend that you start slowly at the latest. Now it's not exactly I've already asked how it's going not much different than last time. I think I'm wondering we'll come in a moment.

A

Maybe have a bit of a discussion after the lecture. I have some things just going well. I also have a bit of an insight into.

A

The results and secondly, that it has already been said, do n't forget experiments under any circumstances, such a date that he entered. He is already final, should choose something, so you don't need to wait for a confirmation just go to the date called so that there are no more consequences. We can start right away.

A

I made a few slides, but I think we will be doing a lot through the internet. So, as I said today, it's about oscar minetti and open source in general, so mainly about the basque june animals that I can move about there and how I open the rest source. That means how can I become active in the open source community, of course,, something in particular,. It will be very interesting because many are not yet active in the open source. Community,. That's what the.

C

A

Says on the us website: rosberg languages, and policy studies, cres, networking rust in the wedding experience. So it even says on the website that the ras communities are extremely important communities, always important when it comes to anything new, but right now ras we actually always praised. This is one of the largest communities.

A

That is always praised for the fact that you so that you welcomes newcomers and that you are friendly and so on are not really proud of the fact that we have to do with a community and I somehow feel like a few others.

C

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Website- and it summarizes most of what the community has to do with lots of links and hints, but that would be too easy if he just explained that look we'll do it anyway, a short overview.

C

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You can find out surprisingly, I have shared a lot now. Let's get started command things through first, before an official rast forum of the two-part interesting thing is that user forum in the user forum, you can just chat in the normal forum. On the other hand, everything yes, everything that has something to do with something you can outside. That means that there at some point In any case, post, because somehow you're stuck, just write something there and I 'll help you somehow.

A

If you have any ideas for rest or if anything has to do with race, you're, actually always in the right place, the official forum that can be.

C

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Users, online .org: that's why the user's internal forum,, which will probably be unimportant to most of you at first or maybe, will also be important because it's about the development of the speaker,. So that's exactly what the forum looks like and it.

C

Became accessible.

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But that's not about it In general,. What then, really has also been the development of the language is towards its future,, which might be bad,. It could be that the design is good and so-called proxies are also posted there,, which follow at the same time,. So that's actually the best other place where this user has any questions that you are actually always in good hands.

A

Then there is that, maybe you know a few things is you say a very well-known product protocol with which you often appreciate in groups can somehow be online and there is also rast active there. You can also get very quick answers. There are different channels, for example rast beginners. This is for simple questions or for everyone who has a new route or if you are new to rast, and since you have no idea at all, you can definitely come in there.

A

People are definitely just concentrating on newcomers to help and to help people who have any questions. If, of course, you have highly socialized questions and you are perhaps also rehearsing in rest, then it is not about everything there.

A

You can talk about everything that you have to do and that's really where everyone is always sitting,, so to speak, everyone who has something to do with something sits in this channel, so he sees all the people like rast developing with them, and if you have any super complicated questions,, someone will probably pay attention to them and can tell you some strange details about the compiler or something else. Somehow it's about everything.

A

I do it by the way. Only roughly I'll go into detail here again, a few things, but just so we can see an overview. There are internals on the rust. You can imagine.

C

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Still talk about language design, other channels that deal with language, design or language developments, even quite a few smaller channels, I will now actually have a German channel, that is,, if you don't feel so confident in English or simply have difficulties understanding. If someone actually talks to you in English too, there are not that few people in the german team right here is another link where all channels that are important are described unicredit. I don't know if I think I 've already asked who is talking. Is that right?

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If it talks to you then have I haven't asked here yet I.

C

Can remember that.

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Captain did n't get in touch the last time, but maybe that.

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I found out about it, but.

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Paintings are saved now, there's also some fidgeting about for rasta. There is that's about it, everything somehow what we come so really all things will prepare birthday and announcement, but also something like in the user forum will be posted to questions or very important on blogs. Written by some people will be surprised, then costs there are, for example, rast gameware buttons, other apriltag, mainly in the game. Development suits me to imagine that there are other ensembles, but somehow I couldn't find a list, but these are really the ones I know about, and here is.

C

The link again to.

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Emstek overflow, which uses a little.

C

Something else I.

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Don't know how to resist stack overflow active, not only reading, but also writing immediately clear that nobody has reported in memory either I say for those who watch the video of course a little differently. So there is also a day you can take it offline, surprised and there's a bit different to, because you have to keep spector corridor paths to these many people, very, very strange to that I'll also say something shortly, but here is a little spoiler. It's about questions that you can answer and not kind of discussions like that have to be there.

A

You keep a certain form and ask from the surface who manages to get some of it now looks at or if you look at some of it, you immediately come across the following term,, namely on the court of crunk.

A

I read it again so boring that I don't know if the us website again, we are committed to providing the friendly save the world for all the gates of gender sexual obsession, usability city, college, aus, dem, hof, personal service, characteristics of conduct, set standards. Vbhg euro for guest in front of us just has a few rules, the friendly treatment of each other, and there is such an incentive center of this race community. That is quite important that we.

A

Implemented something with burdens everywhere. That means everywhere there are some mods that are somehow there at all or who found out that they really respected. That will. That is somehow supposed to be the most important thing with the old pattern, or is there an out with normal, because I found this weekend very important curtis, whose not yet optimal route is also available again with physical contact. That is also not that long.

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You can read through it before you, so if one intends to immerse oneself in the community can through one quite fleetingly 60 long, he gives.

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Discussions about whether such a code of conduct, woman and some changes how stupid but actually is quite good because most of the people we scare off the rest community, you say I don't want anything to do with the community. We're fortunate in code of conduct are mostly the people I want to deal with so that 's actually quite good. We look at a few walls because they exist,, for example, yeah people who are- or many of you probably won't, be familiar with aziz- the cover flow or talks.

A

So let's take a closer look, because he they there are maybe a few rules to watch out for or things to keep in mind, for example, that you have the rule that you shouldn’t ask a meter of questions.

A

That means it’s, always a nice one, but a group chat new series by demeyer you, for example, in the large rest of the group chat. Then you can ask directly what you actually want. If you know anything want, how does it work or why does n't it work there? It asks directly in the first message that I don't ask anything like everything. Basically, you there that.

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Are such meter questions.

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And you know there are a lot of people. Are group chat, read all so passively and if someone asks a question you can answer. Yes, then he writes the answer in it. But does n’t need any answers now, because otherwise he’s obliged to give an answer later or to say no I don’t know, so you should save yourself such questions that’s just a bit strange.

A

Then, when you have a normal conversation, you might try to be friendly and have small talk for a short time before you fall right in and the door falls into the house, but always with such large group chats. It's not like that. You can have a normal conversation and somehow chat a bit no problem. But not if you have a question just start small talk, it's kind of fake cents. You don't need it. That's.

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Bit confusing, then, if you actually think behind rude, do n't expect that which is also normal, that that's very, very many,, especially in the large council chamber,. There are a lot of parallel discussions,. That means you sometimes have to keep a bit of an overview, go in and out of the basement for a while today,.

A

That means, if you somehow have a new client who also shows which people are going in and out and then talking two other people, because something is different, then it's sometimes a bit confusing, but that's completely normal that you have parallel discussions, so maybe confusing that's. Why I don't like it that much, but it's normal, then at the end, you'll probably see thousands of users inside the channel. They are not always all active and read all your messages. They don't need to be scared in any way. its writing.

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It's like standing in front of a thousand people and having to tell them so it usually happens in the super, but there's always one because he somehow, as at least one always asked euro answers, if you haven't noticed that when you used it or clients so program with her than you can use on the website.

B

Itself is linked to that.

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Is a web client, so a small browser whose works? It's always very simple. You don't have to install anything. You can just click on it in the browser here, just the little hint, I'm forgiven, random names that look something like this. If you automatically lure yourself in that want that people want that, I don't like it that much that you have this random name also gets four percent gives sex chat that 's an example of what I use there are somehow 500,000 other little ones than it is not exactly unknown.

A

That's why you can choose that. You want to have a look in the garden of course,.

A

So there's a link to it. This is the description on the community page, which is now linked to some things, and here all the legs are listed, where in particular, the international channel partners have different languages and there are also very special channels. Someone really wants to do a lot of development under a lot of talking. You can maybe you're more likely to ask at these points.

A

If you click here familiarly, then you come or you are forwarded to this furniture freely and easily. They also changed their superstar name. I can at least remember that once with and something was going in and the whole thing briefly, you can see me like this, and we see here on the right side. There are a few people in here, as I said. Most of them are only in there because the servers are in there all the time. There are not that many very deep once say.

A

Maybe answers yes right now, maybe.

C

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Stupid, of course,, especially since the project does n't, make sense from a discussion. Wilkens.

C

I would allow.

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That, yes, and then there are others who have written.

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A lot of people.

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In it, but as I said here, it's very clear that it's about that you kinda beginner questions asked any questions. If you already mean I mean the question, you now make it a bit more complicated and you want to reach a larger audience. Then maybe we'd rather watch another channel, but we'll definitely watch it.

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Even though I'm thinking about it right now a bit more separate right here. There aren't that many in it, but at least 49.

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Maybe we even know that's enough, then I would suggest we take.

C

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To develop it so far, of course you always ask questions. You still have questions I 'm personally, not as often as you do.

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That says for two reasons. Once I find it a bit confusing. If you really want to talk about complicated things, I find that confusing will happen on two other parallel discussions, and also you can format the bad code or you can't make several line breaks in a nice way.

A

That's all very Very short messages designed so I, don't like it that much, but that in any case there is always a lot going on, and if you need a quick answer, you can definitely get it and especially if you also need personal answers from the people who do the remaining work. I think I do Asked this morning, who is actually paid by mozilla I'll. Tell you right away, but you couldn't ask bank.com a little cover, fled.

A

There, as I said there are stricter rules and I'll try to explain them very briefly, because there are a lot of them here too deterred by the stack overflow is once linked auto off. This is a very important guide. How to get out of the eco floor. Questions are important grab, it is not a forum and it is not really affected by most. So it is a very common opinion on the internet that decor flow together excludes newcomers and newcomers, and you have to emphasize the one.

A

Let's say: that's often not ahead of the limits, but stack overflow has strict rules for many good reasons. These rules are more difficult for the new ones to come in. Well, you have to get to grips with some halters, not so easy for newcomers, but we don't do it on purpose. We aren't on purpose the biggest concern.

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I sometimes said we because on steaua I could introduce myself again and again actively so, and the important thing here is to understand that the question you asks aufdecker flow, it does n't belong to you, so it's not about you in particular and in question. That's different from a forum and usually you go in there and ask a question and it's about answering your question stack overflow, that's kind of his collection of knowledge in this crash is different.

A

That means everyone who asks a question, that's good because they add something to this knowledge database, even if you have n't answered it. Yet it's still a question, that's good, but then it belongs to everyone again. That's just a collection of knowing that means that strangers can work on your questions without any problems,, improve any taboos or move the.

C

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Back, if you did n't get it right,.

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It's not a problem because.

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If others do it,, although many are not used to it, when bad feeling that others suddenly want to freshen up your things, it's not at all. If you suddenly somehow change other people's things in my things, but that's okay, because it 's about somehow creating your collection. You know the decor flow is extremely high. With the google queries, she actually always finds a stake of low answer in the first result from google if he googles something to do with programming.

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That's why the godless is really important that you get all the good answers at the top of google so that you can get it quickly, finds answers, and as mentioned, it is not about the individual person who asked the question, but rather about the tens of thousands who later click on it and find the answer to that is something that you have to understand once you can do it.

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Even though, and when you are very asks at the beginning, then it could also be demotivating if someone downloaded says the question directly 1, but that only means that it is not a good question at the moment. People then follow up on the question and give masters hints as to how the question could be improved and as soon as you have improved this question by editing, it,, then the minus 1,, I.e. this download,, will also be removed again, and then people will also remove that again,.

A

So many people would quickly be demotivated,, but that just means everyone else who is currently looking for it. Questions that can be answered. This question can't be answered at the moment. Do n't look at it, yet this isn't finished yet it 's also demotivating. Yes, you should n't, let yourself be pushed away too quickly. So if you somehow follow the rules and get involved, then that 's it the very, very nice sentence, at least the snaps around.

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I don't know how it is with other text, and I have something to show briefly, but only now we look at which.

C

One answers.

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C

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All actually all ask meter question and first said hello and before you ask a real question, maybe there will be other cities here.

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We wanted to take a look.

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So you can see how things are going, so you should definitely not be discouraged from asking your own questions if you watch the questions,, for example, rast are covered every question about the pattex. You can see a few here, and the number of questions that have been asked is already around 6,000. That will somehow be exponentially faster I have the feeling it wasn’t a long time ago at 5,000, so that’s quite good that things are slowly getting faster and now making examples.

A

Here, for example,.

B

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Person asked something 2 42 hours ago and an hour ago, someone else edited it where something was edited very often that 's interesting I.

C

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What we're showing beforehand would like that's why it's a bit of luck or bad luck. There might be a bad example. Is the questioner still working on something?

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Maybe I'll go next time I'll! Do that too?.

A

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Something that.

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Should be mentioned often will be asked as it could somehow be marked as now, not that people are mad at you that you have probably already asked a question. There is actually an answer actually, on the contrary, first of all, they give you an answer. This is something you have to consider. They say, namely they don't write an answer themselves but say: hey. Look here is an answer look here, so they will give you an answer. That is point number 1 and number 2.

A

Are you not angry that you asked that again, but actually it is good, because then there are other formulations of this question and different people come from different directions to find this answer. That means a different formulation of the question good, because that then attracts even more people then points to the right answer. It doesn't mean a bad thing to ask double questions just before looking to see if it already exists anyway, maybe with the title. We now have five uploads that maybe quite good today even painted a picture that, of course, is particularly good.

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For example, maybe one of you has worked with ndr before, but kate are nothing, but it often times like that kind of strangers, also edit the questions or the answers, here,.

C

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Yes, that was the original questioner again, but his boss master, for example, that he is also very active, his funny guy, and he also improves things you see here. That is not the questioner, but still easy things improved according to formulations adapted and something like that and to what actually.

B

A

That's usually always the right thing. What we do so don't.

B

Get discouraged and when.

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You get into the depot flow, then it's actually a really nice experience that you can do with it. You usually get an answer pretty quickly. So if it's a simple question, then you'll get an answer after half an hour at the latest.

A

So on last, reddot of this list was missing from astrid, or at least some it's about everything with what has to do. That's why I use it very often because it somehow really costs everything,, especially a lot of blog posts that you don't get that often,, but also questions and discussions.

A

Everything will look at certain things again and if you are already using it, you can simply subscribe to it. If you want to stay up to date, about rust, so buy a link on your front page once a day or.

B

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Surprise so you can definitely keep up to date, pretty well, and here 's an extra rule because you ca n't, do it otherwise, but if you can download from reddit, then prepared down errand, there is also a special rule that you shouldn't keep talking all the time just because you're, not the people's opinion, is, should only download, because really that comment is somehow bad doesn't contribute to the discussion or somehow offends people or something like that. So you only want to have constructive criticism and a rule that 's a bit of a shame.

A

In contrast to the yesterday, saves about you're not allowed to post here either it's a bit of a shame, but we've already seen the exception,, mostly on New Year's Eve,. Sometimes the tablet breaks a bit and everyone goes crazy. So.

C

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There are other sources of information,, of course, if you use twitter, you can do that too. On twitter follow on twitter. That's how it is. If the numbers official blog, then we'll have a look at it. There are important announcements or changes in terms of the language and also the announcement of a new compiler version.

A

A

Ok, so here you can.

C

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Posts about new ones, compiler version, by the way,- that's not very old,, so February 2nd, I, assume you've all already.

B

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It, so slowly, it would be timely,, otherwise it would be really hard of date, we'll take a look at it,. Here are a few important announcements and, in addition to the compiler version,, let's take a look at what's in there,, so they say, for example,, always with rostock, could simply think you should stand up, and then it's always nicely described. What's actually new and particularly important in this new version,, which is now even some already noticed in your projects that this casting griffin has been stabilized.

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Some of you will use it for the realization of things and the casting went very well that if you look again right away, it's been active and stable for four days. That means you can using it with the normal compiler means. You can do some strange things like, for example, here where you read places to realize and desiree here it works, so that this version was the main culprit, and then we have a few other things in it.

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That maybe a few too people are of interest here are not that important are exactly what makes it very interesting. The sorting algorithm, so the german made faster missed, is also quite funny, but we will go into that later. It is always said in quite detail that it has changed like that. But if, if you want more detail, you can even go to the direct release notes and then it will link everything that somehow changed it and at the.

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End the people who worked on it are always praised and they have now set up a new page, dear and russia. You can now have unicode in wales where the name is implemented so ugly, then actually not google. You could display it correctly. Yes, well, there will always be people who have worked on it with 1.15 some people who have done something with it. Always.

B

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It completely nice, if you then really say to all people, whether they have improved typo in basketball or whether they have done something bigger,. It was nothing more exactly then we'll continue in another block, the 90 remaining rasts. That's what happens when you really follow rasts. If you don't just want the new version, then you definitely want to subscribe to it or follow it. Somehow, if you subscribe to the field, then you usually already have enough and always notice.

A

When something new comes up, which happens every week, who would have thought that somehow all the important ones things summarized what happened this week and really everything? We also look at it super, and it is also interesting again that, like almost everything else is developed open source. That means you can improve almost all things like that ipos sees if he changes a typo. If you find rest or other errors, then you can simply determine a pullback that improves. So these are all very, very open.

A

That could, of course, also be and really now that the latter happened and the gategroup because of what it says here in the summer that, as I said a lot at the beginning, there is a little something about the host families, in particular, which blog posts there were in the last week. That may be very interesting, as I said,. There are many different blog posts that want to explain something or somehow explore new paths,.

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There are also many tutorials also here or something like that, or people say that they have problems, and then some people say what happened in the forest village I stopped, but we are always very happy that we can then improve what people find bad about the language once posted, and then there are two other smaller things. It 's also very funny that there is a creative suite,. That means a trading was written from the creative suite, because it's somehow great or special and.

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That's probably.

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Coming this week, this person.

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A

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Even look at? a logo in his music was ok. I understand now it doesn't matter that quickly seems to be good in any case, suddenly, not standing, that's quite funny. If some user-generated things are mentioned, then there is a very interesting section where people add entries where they would like to have help from other people,, particularly suitable for many beginners,, where it is said, and.

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Said if you want to help me with something I have an issue that needs to be taken. Care of this is not difficult. At least that's what you always see here, you tags at the beginning, we'll see you here several different things: klip ii, if you've seen it before this is one of those things that will make even more mistakes to show you what idiomatic guest is and kraft doesn't even collect that it should be at all.

C

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Is actually interesting because you are usually linked to some is on github, where it is then described how something has to be done. We will come to you shortly and then think about the update from rastko. So what has really changed in the language? What happened in patrick chan's secondary school, and there are a few things that only happened in one week. You really see.

B

Everything and.

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In this section, you also see a lot of things that you don't understand, because it's just too complicated,, so you might understand some things, for example phuket something that is now a trade there. You can imagine that somehow that treats about types that you can inform in a crouched address whatever that is in any case. Somehow the strange address that was apparently implemented system was maybe not before, because you don't know you probably forgot to score the goal.

A

Yes exactly there is still this here and such said, you just don't stand up somehow or that that's what it's supposed to be,. So people who really understand a few understand that direction finder. You can maybe ask a little bit next week on wednesday, who can help you a little bit better.

A

Then, every week the new little helpers will also be mentioned, so those who have something to do and have helped there is always okay, too nice, that every week there are races and at the end we come to almost at the end. We come to the osc cas action. There I will understand something else to say about it in a moment, but also important shoots. There is a calendar attached where somehow, all the important events that will take place soon are on it however,.

A

It says that there is actually always something in Germany, here in Cologne and somewhere or maybe not only once, in any case,.

C

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Is a lot that is going on there and there is even in the official calendar where you can always look, that it would be quite interesting. There have always been lists that are already asking for what people are asking for. That is also very interesting. There are actually jobs so this week only one club, but hey at least better than new, that I have never seen that I think, is the first time there.

A

Somehow there is still so tellin in germany, no idea, you can definitely do something, and there is something funny for me at the end, after the quote about what is said in this case, it's about the klip ii, throwing you even more warning. If you do something not done as well as it should be done,. So if you do n't get enough warnings from rast compiler or get errors,.

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You really want to take a look at it can, if you want and where you can interact with the community, then we can now go into it a bit. How is it actually developed? So the people actually do the language background or not. In the background we will see there is a first team that is somehow the administrator of this rast project that is activated again several sub- teams. There is a core team of this cortina.

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Probably the most important thing is that the most important people in it should decide which general direction the project should go with, and the leighton other teams and somehow organize everything. Interesting here, is that most of them are paid by mozilla from the choral team. I said yes is a community project, but what were we really excited about? Is you want to have a few employees who work full time load?

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So it's always a bit questionable how much influence mozilla really has n't pushed through any weird policies,, but luckily they wanted that in their company and here's a link to all the other teams, of course,. Do n't withhold it from you very briefly,. So the team consists of these eight people that nico likes is, I have already mentioned. It is very interesting and clever. He made it is funnier races and, as I said, there are a few other top teams where the people are then listed.

A

The whole thing is interesting, so.

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Here are also because the.

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People, because the most important aras community, in which you have a right to say and what you said, design the implementation of the compiler- that's all completely public. That's an interesting thing about it. There's really almost nothing that isn't made public. Of course, the employees at mozilla who sit next to each other are talking also like to be together and did n’t publish every word. They said, but otherwise, somehow everything important that happens happens publicly on the internet.

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New features of our language are regulated via the so-called fi system, which I will explain in a moment and which is also important. Everyone can do discuss with you, yourself,, which really surprises me a little bit, that the system was not fully exploited.. There is surprisingly little spam in such discussions,, which is always very good,, but everyone could really have a say because they somehow want to say something thing that you probably already noticed, but briefly talked about how the compilers are actually leased.

A

Two to three compiler versions: the stable version, the normal one that everyone actually uses. There's the beta that I no one uses as it turned out last summer from the community version. The stable would be read every six weeks and the new version is this: where the your systems, the version number somehow has a meaning that you can't somehow change the version number somehow, but that you can read from the version number what is backwards compatible and what is not here.

A

Is that what will happen in the last few weeks and soon so shortly before christmas, 1.14 stable, was released. At the same time, the beta will come out and knightley will then also be banned on 1.16, and you can see that everything moves to the left by one step. Every six weeks means somehow now a 15 was released. This 115 was released as a beta before christmas.

A

Yes, this beta is kind of a test phase where all things that are supposed to be betas, as well as the stable, should be released in six weeks, but they would like to give it to the public to check if nothing big breaks has n't worked that well up to now, because you've noticed that not that many people are testing this beta,. So you should always set service to also test the beta,, but we don't have that right.

A

Now many people made that's why look, something broke because no one tested the beta and then everything broke only when it was already stable. That was a bit of a shame, yes, and that will always come out as a stable release, but sometimes there will also be a new version uploaded. Then there are some bug fixes. So there are minor changes, a new features, but bug fixes.

A

Then there are still tolerable, that is almost always the current status of the master branches summit, posse torres or compiler is being developed and that I publish it almost every night. That's why the name knightley once so once per day. What you have already noticed knightley allows the use of unstable features. These are features of the language that are not stable and where you are not yet sure whether you want to publish them in this way, because you have noticed that integration is a, we only ever increase the my version.

A

That means all compilers like ours are backwards compatible. That would also be absolutely terrible if somehow, all six weeks of the checkout were combined by writing beforehand, so those like that are best backwards compatible with these unstable features. It's like that. You haven't had enough time yet, or you were just not sure how these features should really look like now.

A

You really want to have a function that does that and that it really makes sense to have it, and that makes less sense or runners to the design, because you didn't have the time yet the to design. That's why it's unstable, because whoever relies on unstable features has no security guarantees about stability, unstable features can change every day. That means you can't rely on what they stay like that. That's why they're unstable? Yes, that's kind.

B

A

The system behind it, no, there are still some important things unstable that you like to table dealers. That's why some people still use the mighty compiler regularly, but especially with the box that was released a few days ago, that should go back sharply. Custom grab, namely such a big reason they still envy to have used. It was stupid that was just broke every now, and then you don't want that every now and then somehow jonas breaks everything he has.

A

There are a lot of people that happened to you, but jonas did a really great job that one has sent beefy and everyone thinks it looks good. You just broke something so with knightley. You do n't really want to update all the time, not really try out every version, because something can break that's from the master brunch that you might not want that sap system that I have already mentioned here. It is somehow a system that is used by many organizations. Have you ever heard of it and all new language features from rast?

A

They have to be defined. Let's use this as an example of what one thinks quite well can understand. Some nazis are, of course, very theoretically uncomplicated, but I think that's the way it.

A

Is in a special repositories that you can find out about them and dagmar new ones from asperg. That means you write an ossi. It's only in english. Don't rest, maybe it's a bit, but what is in it then somehow just writes a description of a feature. What you want to have the people describe. It is then very short, and it looks like that. Your market down file will be a few actions, for example in the story. It says why you, then there are a few other sections and we actually get to what he doesn't say.

A

So often you want to initialize data structures like trakt once did, and you often do that by preparing the values for the individual fields, beforehand,, for example, there was never one functions and then assigns the moment a better example.

A

So, ok that at the beginning that you often do it somehow that one field calculates that other fields calculate, then you say at the end of your method or function, corn tract and then you specify the field that is, but here it says that, of course it doesn't work that way. That's what he suggests, what you do that, instead of having to somehow give the field name colons the field worth that there is a short-hand sports fans notation here. That means you can save this colon. That said here.

A

So if I somehow take a lot denominator, is that somehow takes a look for many countries? If you have simple jobs, you usually define the values right here in line because you have a more complicated wing. Maybe this has happened to you before then you want the previously calculated.

A

This comes with this value, so he suggests a very simple language feature that you should implement it. Somehow you are motivated, then first says a bit that it should look exactly like this I specified how the rasko katic changes and there are more examples given and so on and so forth. So very interesting: you have to weigh up a lot that this happens. It develops over time so sometimes make the pool request and people comment.

A

So people will always have some kind of comments and say it like that bad is good. We don't want to change that or something like that, and the discussions can get quite long. This is his medium-length discussion with only 113 comments, so it seems somehow discussed and at the very end there was someone from a core team. That's now noticed so probably said before. Yes, in any case, it was noticed at some point and then it means something like how you accept it.

A

Now the community together said that a good idea we want to have a language. What then happens then his dirty dishes are put on. That means in the case of the main culprit story. First, learn rest, a shoe is put on, which somehow says something about it. That has to be implemented after this on you that a link to the doctor you and that soon everything in your head. What that needs to be done believe me I, hear. First once came up that there is more to come, but so far it's like that.

A

If you have a great idea somewhere, I already had thousands of great ideas which somehow, after a short thought, turned out to be not so great ideas, but it can often be that you have such a has an idea for rast. It is best to proceed as follows. First, let's have a look in the tunnels in.

C

A

Of the internal forum and put a thread on a so-called proxy- that's not so formal, then you can just say I have here and the idea I have on those the thought about the news case,. What do you think of it,? That means getting an initial assessment from the community,. What do you think about it,? You can also talk a bit about how you would put it in the archive,.

A

Then he would never write and say goodbye as a pr send it off, and then there is somehow this discussion phase that is sometimes lengthened or everyone discusses it, and then you probably have to adapt and improve it again and change it a bit. Typically, no doctor is accepted directly in the first round.

A

The knowledge is unlikely, and if so that they noticed that the idea was then accepted, and we implemented it at some point, put on his trekking shoes and discuss how to implement the feature in the language, and then you can also implement it or have someone else do it,. It doesn't really matter another think about it and implement the actual one. So, where you think about it now you are working on the compiler on the language.

A

What is happening here so shoots nice good to somehow involve the whole community and discuss it, but at some point you have to argue like this, and here he lives, thanks to the compact on this motto ring last very interesting. This palace written in itself the self hosted compiler.

A

That is a very interesting thing, because there are many things that you would not expect now. First of all, you may ask yourself: how can you create such a compiler in.

C

A

Language, this compact complicated, who has an assumption for you and who doesn't know for sure.

A

C

A

Does the first complete one come from that? So if you now take an older compiler where.

B

A

B

A

Exactly right, the first complete wall not written in the language, so that's kind of the joke there. You can help us, don't write the compiler from the beginning. You have to write the compiler in a different language, but then you can write it to them. So once you 've written a compiler,, for example, a good camera that another language that is not so well known and that can combine something that can also be combined with a compiler. Then you can use the campaigns to recompile the compiler that has written something.

A

Writing yourself is so complicated, translating.

B

A

Exactly right, that's very important. That's the biggest test of any kind for a language, a compiler and one of the most complicated things you can write, and if you can write a compiler of a language, then the language can do that pretty much everything. So probably even the rosskamp healer is the larger project that currently exists. One simply underestimates compilers are extremely complicated. There one almost needs a doctor and to write special modules, at least with you. Maybe you can wait have to say liszt interpreter there alone, but in his house completely not without.

A

There is another interesting thing about it, namely there is a so called attack. This one day will be the 90 trust inc, because there are rarely come everywhere. This is not the first time that this is done. Typically, you want the compilers write the same language, among other.

C

A

Selection, so for the reasons just mentioned, but even if you can, of course you can work in a language very probably also want to program in this language. That means that the motivation naturally blows very, very strongly against the now. If you now would write off the rest completely, there would only be more reasons why you continue to work on this. What is coming, but you want to write the bast back to it. It makes a lot of languages ingo has now also a year ago, or so they finally have their c compiler.

A

So your ingo compiler, written in c replaced for a written go compiler and yes, e.g. c++ compilers, are written in c++ anyway, although that is not so strange because there are several 10 ++ compilers, because you don’t have that much dependency on the system. Although too, this attack. This is a fairly well known attack that was suggested by someone I think, while he was giving his speech, I.e. accepting his turing award, that it's going to be interesting.

A

Definitely talking about selfoss, the compiler and saying you could now build a vulnerability in a compiler and you will never discover it. The plan is roughly like this. You now put a security hole in a compiler.

A

The compiler looks to see if any important program is combined. The classic example is the unix login program, so the original example comes from a c or c++ compiler and if he writes the login program of unix,, which somehow ensures that the whole world can log in and see what data is verified afterwards,. You can now see that exactly the program is being completed,, then the compiler could insert an extract into it. Program, for example,. Something like sends the password directly to this one.

A

This year,, the compiler, could insert that and you wo n't notice it at first, because you don't always look at the whole executable and everything you read in it probably does that none so far, it's not tragic. So far. It has nothing to do with marcel frosty compilers. You can do that with any compiler. The problem now is that you hide this security gap. As follows, I mean, if you have a compiler project somewhere, the program is the same immediately: login, the field,.

A

That's why the trick is you make a compiler that has this security gap in it, and then it comes to me once and then you completely change the basement again, so that the compiler notices when it complicates itself. When you complicate yourself, does he find the source code so that this login thing is written into the compiler? That means if such an infected compiler existed, execute jubel in an executable and the whole source code is more or less deleted. Then you never come back. That's the problem. You always.

C

Have now this vulnerability.

A

In it,, which is again combined in the new compiler,, which reinserts the vulnerability itself,, which means you can't get out of it,, it's extremely complicated to imagine,, but luckily it's a very unlikely attack,. So that's not normally done,. There are clearly simpler ways how you can do bad things in the world, so bad. What you don't necessarily learn, something about compiler design, all very interesting this. This link for links on a blog entry, where it is done with a compiler and that's not so much as you imagine that that's definitely very interesting, will go back.

A

First, like bug, fixes or small internal changes, for example, makes the algorithms in our faster. They don't need them, because I don't think anyone will object that this bug should be fixed or that you somehow should make satires faster. That's why you do n't need a doctor, and you can send something like that directly to the compiler, and it 's also very important that the people who would like to have bug reports- that's very clear everywhere.

A

You should always, if you're, somehow unsure and the man, if you think, you've found a bug and the compiler should report it immediately, because then they can deal with it. If they don't know what kind of error there is, then they can't fix it either,. I 've already reported quite a lot somehow and that's not bad. If that a double message is- and I have n't found it before that 's absolutely no problem, we always say thank you in this file.

A

There is more information about it and what magath found is it's all managed by bots and before we take a closer look.

A

Let's take a look us this now here at the practice,, so it is now, as I said, on a level that is still administered by a doctor, and here you can see directly that a suitable, a request has been created here. Where someone has this as I what we just saw implemented like this, and then there are a few comments and typically code review is why we closed here and we.

C

A

Do n't know either loads. I have n't read through that. Yet that might not happen here. We'll look at other examples of ps like for example,. It was determined that this is very up to date. This person has told her. He adds the method to rule ab and headset. That does one thing that you can actually add things like that you can actually add them without having studied compiler design.

A

That is yes only standard library and often looked at implementation in the standard librarian team, so he just adds some methods here to the standard library that doesn't matter. That's not particularly bad. Something like this happened.

B

A

For the first time there is this rust high five, that's a.

B

A

Thing he greets all new people directly and says hello thanks for doing something and then explains that a few things in particular, last haifa always has a review too pale in this part, and he gets through the __ ] and somehow checks that everything is in order. Maybe comment on this code and others will also mostly jump in and then see what's going on, but it's not over now that it does n't happen very much.

A

You see it's kind of backyard old here the checks have gone through, but that's it not everything that means checks happens. So just a quick look at this bot, it's kind of all, if you're new or usually somehow the review so that there's always a computer at one responsible for it gives the bot that's something good. If you want to vote it's not that important if it's about bors now, so the most important part is a picture with mockery.

A

If you now accept a pr, then you say borst: let the maintainer know, so those from the northern quarter manually, let the pages borst know. Sometimes what boris then does is that the pr is submitted in a list in a cow to be tested on all platforms that are supported and only if all tests are okay, then cohrs will intervene.

A

We take a concrete look at the first time.

A

I think that was a very good example is already in jerseys. The song was discussed a lot. I think it's really okay. So at some point I was told okay, we agree, it can be accepted, abrasion resistant and then someone says okay, so labs misspelled.

A

It doesn't matter in any case, said I somehow come to an end error and then the super six makes a strange bot and what happens then of the book that tests in the background on the image server and that tests for some supported platforms that means for windows, linux, unix and all the strange variations that are almost supported. It is tested,, namely the compiler, the complete compiler test, suite. So quite a lot.

A

There are a lot of tests that always run through that means before mixing or you can only match people through this boss and this bors only if all tests on all platforms. Somehow okay say that was the case here then in equestrian sport it just clicks in the highest daughters.

A

Yes, that is definitely a very good, very good thing. Then, hardly anything beats what is entirely on the master, so they can leave the master in the arri as a like picture. There's also one of these you can see what's being combined. It.

A

's kind of his crew of things that still need to be done, like I, said: there's always a weird picture server. That does everything in the background and has a lot of weird virtual machines running or other things so on a platform, it's kind of tested and on a cpu architecture to be supported for a long time. Bot itself isn't really a bot, but it's a tool you can create. That's there to.

A

Check questionable backwards and compatible changes, which language is it unfortunately, like that? Sometimes you have to do things that would technically be backwards, compatible and every time only releasing a new version for it wouldn't really make sense,. That's why rast goes a halfway questionable way when it comes to film a tick version and release. Yes, sometimes backwards incompatible changes, but only if they are very unlikely to happen and to guarantee they are unlikely to happen. This creator is left running this creator, just tests all of craig's trades with the new cross compiler.

A

If there are any errors, yes, it takes a little bit. You are right that we can see in this example. What was done here is you. This person has generalized this contains method from slice. That is actually a good idea in which it was said that it doesn't even have to be a size that can be something completely being different, is a good generalization, so.

C

Somehow made more general.

A

This method problem is just again: people quickly found out.

A

This is a break in change, so it's something that might be backwards compatible and that's. If you somehow have typ in friends with you, it's a bit more general, then several types can also be pure. Sometimes type in friends doesn't work so well.

A

Then people always come up with such strange examples that then break, and then there is always the question of whether people actually make a free world for him or not, and then exactly then master alex says here somehow I let creator run out and then he will come back later at the time they say in this case. It's a pity that went pretty badly. So with a new feature, a lot of things break somehow 102 trades, in fact, and eight recreations.

A

That means these other 94 trades, the other 94 they only break down because of these eight craig they break down because they depend on them. Yes, they are like the ruth berschens. They are the important ones that have broken down and when so many craigs have already broken down, you can't say: ok he's doing it. Nevertheless,! You have to say we can't do it,, but this creator is definitely a super good idea, by the way,.

A

You can also see this regression city here,, which wasn't broken before and is now broken,, but is broken a lot more than the loans market rotates. That's a bit of a shame, but it doesn't matter.

B

A

Krabs broken at the end. Yes, then, you can see here. This is creator. Tool is really cool. Give time.

A

But somehow 5600 trades werner tested it's quite a bit, so they definitely have their colors of weird spots or automatic tools that maybe make the whole thing easier and that's really a good way to do. The.

B

A

Otherwise, you wouldn't be able to manage such a big project well or many do it anyway, but then shared again and again something breaks, because almost in the end, if we want to help now consciously maybe first of all help at all, he there is a lot. I always want to motivate people not to do that to live open source.

A

It is, of course, a lot of experience to have worked in open source and really adhering to strict guidelines, and not just getting the job done is something you can't trade for anything. You only learn from the events. It's just amazing. What's in experience, also that it's not uncommon for any company to look at the grid see how much was done. There run the source scene.

A

If you do a lot that it's definitely a plus on my vacation and it's fun, there are kind of a lot of reasons, but I've just briefly mentioned, which ones I'm. Definitely. If you somehow have the time and is interested in computer science, you should try to get into it, even if it is sometimes difficult at some point, it will definitely pay off. In any case, you can work in two main ways is either directly on the astra cabriolet or any other tools from hass viz by e.g. dax reports.

A

The bad error message again and bugs everything you don’t like about rast is basically a bug, and you can report.

A

It different, but basically you can say everything he doesn't like so much go here, say it's certain buck that didn't want this, so you can of course improve the code directly, but that's sometimes a bit difficult, of course, sometimes doesn't just stop improving a compiler, but there are two interesting text is, namely elements and easy. If we go back to the grate compiler now you 2000 I have to do that a lot. If we sort by label here and then tell me mentor, then we'll see a few things here where one mentor helps.

A

That means, if you are unsure and want to learn that,. There is also a second mentor there.

A

From when we get the first one here, what does that mean at all? I don't immediately understand something internal compiler and somehow it says here in any case that someone would be a mentor for it. That means you can just be awesome. You say: ok, where should I start? Let's explain how it works so for these mentors, who is probably quicker to implement it themselves, but still want to give the beginners the opportunity to help tyler comes along and just says where we want to do something.

A

These are good ones, kind of just look it up or easy. Easy is also a good day where you can look for groups, there isn't a mentor right away, but it's still easy more.

C

A

Less but as I said, what compiler is actually all halfway difficult when it comes to the compiler stuff has to do standard library or something like that, you can fix it even easier. You can also participate addressed design, but, of course it makes sense if you waited a bit. The community was a bit read through everything and looked how it works before you said directly, I would like garbage collection now.

A

Maybe he has such a good idea, but you can do it. I have already written down what you were rejected, but it wasn't too bad. At least you had a nice discussion about your passport and that's how it happens.

A

You can but of course, also work in other threads. You not only have to work quickly, kompalla yourself, but the system or stone is of course also super important, as he has already noticed. You want to do something so small inside there is the area like, unfortunately, nothing like that. Of course, it 's a pity because of these young languages either could write the actual things I did, for example, could now I just found there was no good credit at the time. You wrote it, so I did it myself.

A

You're welcome to do something like that always helps, but you can also just report bugs with other trades or send other ps. It's always possible, the people. There are actually always polite and help other people to work on it and whenever you're unsure that something like that is going on, then you can you people just ask. As said in aras community, there is always joking, everyone loves lies. Give so just ask this year, be there wherever the people will actually always be helpful and help you somehow to become active, an open source team or you.

A

You can of course, ask me too. Obviously, I’m, maybe a bit more physical here it took longer than I thought, I’m surprised. There are any questions so far about this whole family, it’s, fine, if you’re interested you can of course contact me at any time.

A

Actually I have too before possibly with jonas such a guest user meeting here in osnabrück to do halfway regularly from thursday, not told at all, hopefully well read this out.

A

Actually it has already been suggested. So the idea is definitely if there are already some here who might be a bit devilish during the lecture. You can do that and just program a bit regularly for fun. That’S definitely a good idea, but if you do I’ll explain to you somehow, if something happens like this or at the very end, I should introduce a few trades. Where you have any can do things. I have already partially removed that which I showed you from the house before.

A

We look at it again here again, very briefly, on a last slide, what types of rast trades there are. Basically, if you look, but there are both left. That means you are looking for a feature, and there is a library written in c or c++ that you could use now, but you can't call it directly and tell it.

A

You can't call it directly on rust from rast, but almost directly, and this is almost that these two links just give a quasi-empty craig whyte and the whole cell function is defined, and so you can then simply use a borrowed bsc. They are mostly somehow with that at the end for system and just stand for the fact that the leg is left-handed knowingly brown links given direct access to the exact c function from another library. This is perhaps not a good idea for several reasons, in particular.

A

All these functions are automatically marked as 111 about it says. Jonas overall, it's rather ugly. You don't really want to work with it, not directly. At least then there it's, these rapper trades,, they're, the ones that usually save a bank somewhere and build a rapper around them who has an identical ap. That means someone uses functions that are also thematic in rast. To use the raw cell function we're somehow not a good idea, because that's not it 's so dramatic, but you still have this native dependency,.

A

Of course you still need this scenery somewhere in the background and what they combine or link, and the last thing here is that being good is difficult. If you don't do everything yourself, but somehow have an interface here, and if you want to make the interface yourself,, you actually have to connect them,, but designing it. Well is difficult, for example, in this climate,. It works because it's not quite perfect,, but it 's also incredibly difficult to put an idiopathic grid ap in the other, but over all these things.

A

Jonas, because of that means, I wo n't. Tell you too much at last. Are the pure rust trails, which of course, we all prefer for small tasks like gymnasts. It's of course no problem to write your own resting place. They then have no dependencies at all on any c things at all. It 's good, because you really need new grids and cargo and nothing can go wrong with these other things. You always have to install something else, which is always a bit stupid and, of course, that's particularly good. Then everything is commented in grids.

A

Then you automatically have a thematic one ap not automatically on what is easier to build yours, but the problem is, of course, there is not often such a huge library endras. That means a good green library will be something that we can use, for example, the complete load is implemented. Then there are different things here, especially with gui. This is an important thing, I hope not to introduce it calmly. I didn't manage to look at it properly either.

A

I couldn't pre-program you anything more directly, but with the green libraries, there are now a lot,, especially with the next two rappers can't imagine. There are many libraries out there, for example,. Well, there are also links that are halfway. A rapper really makes me, but I can't really make myself out that well either. In any case, there is something in between in pure rast, something really good was implemented richly. There is still a good library that you can quad or compote or am I missing somehow at the back very briefly show it now only written.

A

Yes and fortunately it does not need any more dependencies.

A

Yes and then you have any world so the day more examples, then you can. You can take a look right away. It can do a lot, but it doesn't allow a system look and feel, for example,, I.e. no buttons that look as if they were windows buttons that are always there up here,. So that's just the only one,, but that's also quite complicated,. That means summarized.

A

I was very desperate when I was supposed to look at a gui library in. I think there is no good solution for not a really good one, because you really want to build a big gui, but maybe not practiced long enough.

A

Last but not least, the realization there Luckily there is a create that fits in the realization. Did you also wish for that? I'll show you very briefly. There's this one and that's how it works on stable thanks to the last version.

A

Here, I've already half prepared and cargo points. We just have three dependencies now values have to do, and here we import them and what's particularly great, is that we can create.

C

A

Of youth say, article number is now here that we can say here that the kasseler 41 believes it's important and you can sometimes do it. Directly. de.

A

And now you can work on it very, very easily. Now a lot of code has already been generated for you who ask again.

A

And now you want to convert this student,, for example, jason. So.

B

A

Your jason representation of this student have, it goes directly simply compare, says and then do ring we're over there. Then something can go wrong, so just go back and add that just save because print out.

A

We see that it's just in spring and it shouldn't work now either.

A

Okay, maybe unspectacular, but we now have a valid jason representation of our object and that should now we can continue that now as we like,. So we can now just ignore it, and if we do that, then a valid jason representation will come out would be this jason eray. So to speak, these square brackets around it.

A

Everything is done automatically and the special thing the thing is that will now work independently, first of all,, starting with the whole concrete serialization,, which means we can just as well use another format and jason actually supports a lot of formats.

A

Here is his link.

C

A

That is supported by serie,. That's really a lot to see jason up there, which is very important because of me, because it is also used in some way, but there are many other representations or very realizing possibilities that are quite enormous, that we can somehow only get the automatic with this drive in all the different formats.

A

We would like ask.

A

Good jonas didn't I: do it in one day got a bit fit? Yes, we'll definitely see some of you again, hopefully, on wednesday the last official reader will be there, and everyone is definitely looking forward to it warm next three days, not this friday. The next friday, if.

B

A

Don't have any other questions then until wednesday and I 'll stay a bit longer. If you have any questions about a project.