Rust Programming Language FOSDEM Rust Devroom 2018, 6 Feb 2018

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From YouTube: Antonin Carette - Why you should take a look at Rust

Description

Insights into a modern, safe, fast language

Today, many new programming languages have been created in order to simplify at the extreme the art of programming (Golang), to boost the performance of their human readable application (Nim), to secure the way to make and run programs with zero-cost abstraction (Rust), or just to propose a new exiting way to write programs (Scala, Swift), etc. Each of those new programming languages has its own features, goals, attendance, and community.

Today, it may become hazardous to develop with a new programming language, especially for a company or for a full-time personal project, due to the lack of stability, libraries, IDE features for this programming language, a too small or strict community, or many other obvious reasons.

The goal of this presentation is to introduce the concepts of Rust, its pros and cons, and how Rust differs from the others programming languages. The target audience is mainly for developers who are reluctant to launch themselves into Rust, or project managers and CTOs who are looking for stable and exciting new technologies.

This talk is intended to emphasize Rust rationale, and will explain clearly and precisely why Rust wants to be the programming language of the next ten years.

I am PhD student in Machine Learning and Natural Language Processing, working on Automated Documents Processing, at University of Luxembourg. I am interested in Machine Learning, programming languages and compiler design. My main programming languages are Python, and Rust. Open Source lover

Rust devroom @ FOSDEM 2018
https://fosdem.org/2018/schedule/event/rust_introduction/

These talks have been recorded at FOSDEM (https://fosdem.org/)
This work is licensed under the Creative Commons Attribution 2.0 Belgium Licence.
To view a copy of this licence, visit http://creativecommons.org/licenses/by/2.0/be/deed.en

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Oh hello, I am Ultima carrots, and so today, I will talk about why you should take a look at frost. So, first of all, I want to thank all the first them volunteers for us all so much they made. So thanks a lot actually so ok!

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So let's begin so, as you might understand, I am a French Gary. You know the accent and previously I tried to understand what the computer I trained to understand, understood. Just a magnificent sentence to say: I gave that my PhD last week and I really loved free and open source and I am a contributor actually of many open source project so for your information, I plan to open a res meet up and coffee meeting at Luxembourg on your example in France.

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So please share share the information because since two months I tried to do two just import: it's not the correct word as speakers and people etc. It's really hard for me. So if you can share this information or if you're interested just talk to me directly Thanks.

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So today there is a lot of new programming language like, for example, gene in go rest, etcetera, but sometimes when we want to understand why a programming language is really important, we have to understand for what actually it. What is the goal of this programming language? So, first, just a quick history at the beginning, I need and, as you might know, since 2004 consumer. Actually there are big changes.

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We switch actually from monocot multi-core architectures for our computers, mono straight to multi-threaded applications more powerful, adware and democratization of the internet actually introduced a lot of new subtract. So many competition and those big changes actually for the robber are really big troubles because we are able to switch from sequential code to which is fidelity, cost got applications that introduced data race issues, big memory, leaks programs, and with this competition we have actually to build software with a lot of features that we don't actually test a lot and introduce actually those big problems.

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So this is a funny picture. Actually that relate the he has. The idea of you know mm it's directly from the Madeira office, and so this guy is not on the chair and very the posture must be this tall to write multi-threaded code. Actually, it's not desist or to write safe, multi-threaded code and I. Invite you actually to take a look at this fabulous blog post just to introduce you get a bit more. The res program language.

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So in this talk, I will be the most highest level as possible because we are all come from different backgrounds. So I don't want to. You know lose anyone in this table, so I would try to to be the most highest level as possible and Graydon Hall. So it's Mozilla engineer at last in 2006 at this idea. We need the memory safety and raise free, multi-threading programming language, because this was really hard and it's still hard today to write safe, which is red code with C and C++.

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If you want to obtain performance code so with this idea grid on holes, that said yeah yeah, we need the new surplice press and with this ID in introduce a new programming language, the c plus, plus plus plus at this c++ process, is actually rust.

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So rest, what is rust rust is a modern, safe, fast and yeah and concurrent open source system programming language. So it's a programming language actually with the first goal is to write memory safe thread safe with zero cast obstruction for system, just a quickie story, so Graydon Hall wrote the first read compiler in 2006 in Oh, camel and I invite you to take a look at okay. Well, it's very great programming language and it has been sponsored in 2009 by the Mozilla Foundation and in 2015. It's reached first stable reduction.

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So now in 2018, I think we are 1.23 or something like that version.

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So in this talk actually I will present you why you should take a look at first with different layers, so first I will introduce a concept of rest. Why actually rest is your unique, unique with this concept? We are all developers or in majority, so what what developers want? Actually its profitable productivity and I will talk about the productivity in rest. Open source is not only cloud its people, so I will talk about the community because the community is the res community is really awesome.

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Company is a project for Russian production, the to-do list of 2008 and 18 and finally, to conclude so rust has many features, and actually it can be great for developers to have many features, but the learning curve is still high, so I will only introduce what to make rest so unique its memory, safety and yet data res safety and zero cost abstraction. If you want to take a look at all the features of rust, I just check the website, it's clear enough for that and just to explain those concepts.

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I will yeah I will introduce a shorter story so once upon a time the DVD seller and the costumer so just image the situation. You are a consumer and you want to buy your DVD okay, you want to buy what actually you want to buy this DVD, but if the box is empty, you cannot buy it. It's not legal and the DVD seller cannot actually sell you the DVD, it's the same case actually for rest for memories. Actually, actually we have known your point pointer, dereference situation. So just imagine we have strict DVD.

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We were title and weather function. Take that take actually directly the straight in the main function. We actually reserved the memory. We are located the memory for the DVD and we want to take the DVD. But here there is a compile-time error, not at front time it's on compile time use of possibly initialize viable DVD. So the compiler will introduce you that no, you cannot actually run this program because there is an old reference et al present.

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Sorry, new pointer, dereference situation in a other situation, so the DVD is okay, so where's the box and the DVD inside, and in this case the DVD seller is the owner of the DVD. If you want to buy this DVD, you want to be the owner of this DVD, so the DVD will belong to you actually and not to the DVD sorrow and it's the same case actually forest, and we call that the ownership situation. So this is actually one of the main. This is the core actually of.

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First we initialize a DVD which is a struct and actually the DVDs Blade Runner, and we give it as a given to take the DVD here so take is know the owner of the structure of the DVD straight. So we can choose any more in the main function here and we have a compile time error that DVD is not belong to Maine, but to take so as soon as take is not in the scope of the main. Dvd is not there's nothing system.

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Oh, this is actually the that's the coffee feature of the rest programming language, it's the ownership situation. So it's a third situation. You are not a DVD seller, but a DVD renter. You you! Actually, if you are a DVD renter, you just want to be the owner of the DVD, even if you borrow this DVD.

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So in this situation in this situation, you will give a period of time just for the consumer to use actually the DVD okay, and this is really important, because if you give the reference to the vidi-vidi okay, so Bowa will access to the DVD without any modifications. And after that you can print the title of the stretch because it still belongs to me and just as borrow is not his otoscope, it will.

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The rest compiler actually will not remove virtual memory for faulty structure, so it still belong mainly still the owner of the struct, okay and.

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Return to us this DVD before the end of the first M introduced actually a period of time. We called actually the lifetime of a reference, and it's typically a situation where you want to avoid to reference something when you want to reference actually something that varies know.

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That already be memory free, actually like dangling pointers so with this situation actually rest avoid that. So here it's immutable and you can have the situation, what you have actually moved to a ball reference with a troll that yeah I couldn't and sorry for that I will give you a DVD.

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Unfortunately, it's a writable disc, so he can do anything with that and, unfortunately put the initial HT on the bed when a DVD- and this is mutable burbling situation, so just to resume using rest, you can add them to dereference a null pointer attempt to use already freed memory like dangling poker, forget to free memory and add them to free already freed memory, and this is actually the core feature of rest is memory safety, but very some rules actually respects the borescope, not lost, not most outlaws. You know just think about.

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You know the situation of the period of time the customer will get the DVD borrow this DVD. You can have at least one reference to a resource.

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You can have one be table reference to a resource, but you can't have the last two rules at the same times and you must actually asked why it was Fred safety, because when does that erase happens, there is free, actually a combination, a combination of three different points, at least two pointers to the same resource, at least one writing, pointer and unsynchronized operations, but choosing actually the core features or ownership. If you have multiple reference, you don't have a new writing pointer.

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If you have one writing pointer, you don't have any other reference and all those operation as signals by default, so rust answers this problem from the directly the ownership so rest actually using rest. You can't read and write the same variable from multiples read at the same time, and you can forget to acquire your lock before accessing the variable it protects, and this is actually what was made actually for for memory. Interests thread thread safety, okay, so developers say yeah. Okay features are a good.

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Abstraction is really great and we need safety today, but we care about you over it, but Andres the science so recessions. Just you know, people that are using res freshmen as developers etcetera, they said yeah, but we've rushed you only pay for the feature you actually use. Russ does not contain a garbage collector. The compiler actually will just adjust the lifetime of the variables or references just at compile time and perform safety check at compile time.

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So your things of the same performance at his running time than C++, but with safety so for zero cost abstraction.

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You can combine low-level control with a level programming concepts, and this is huge actually for a modern programming language. So this is the core features of rest. So now, as the robber we want to be productive, we don't want actually to write. You know safe program in six months and maybe yeah, but we can do that actually in three weeks with Python, for example, and so this is a tweet from Clement or a frog or the city of Krakow.

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That said, rest up and cargo is by far my favorite torsion welcome to build and deploy management and using restitch. The learning curve is I forest, actually, the same thing for surplus press. If you want to learn super stress, but you can be more productive using yeah, two different tools, rest up and cargo. So first cargo is a built-in package manager forest and it contain actually awesome features. Compile your program check in it run, run unit run your unit test, run your benchmark, publish your library install in itself. Wait so creates libraries and very Banaras.

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You can found on the internet and all of that in only one. Only one configuration file, so you have a tamil file, will contain actually so yeah. I'm sorry for that. Yeah! You have different profile profile.

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Sorry, so you have the profile release with optimization level, at free, no debug mode and for the panic it, except that your your program with panic, etc and you you can have a different profile for your test for your bench, for your dork etcetera, only one configuration file and using cargo you just for example, you you, you can have a new raster project and cargo run. Cargo builds and yets, okay, but sometimes actually we use. We are using different version of the compiler welcome rest up.

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So rest up is a Installer first and the many objective in Star Wars from the official register channels keep the compiler updated, making cross compiling simpler, actually rest up and cargo as a best productivity tool. If you want actually to work in a group on a given project, and just just talk about that- which we reached more than 13-thousand rust, libraries in January and nearly free Android, my loans- don't know the libraries in January to so.

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This is a picture I take from the rust fest in 2017.

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Open source is not only code and that something we tend to forget. Open source and free actually feel free and open source, its community, its people- and this is one actually I- think I like the most actually invest in the community, the res compiler. For now it's 50 release, but it's more than 2,000 contributors and more than seventy.

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Seventy four thousand commits and the community is really open to requests for comments. So it's not a programming language. You know that is sponsored by Mozilla and modular, say: yeah. Okay, please, please to do that thing. Developers are young. Actually, maybe you can take a look at this and developers and Magnus said no. We will follow mafia. No rust is really open to the community and each developer and sponsor actually at the same place. There is no someone. Actually that is upon decision than any other.

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There is a lot of groups meetups in 35 countries and if you stay in Europe, where is the rest rest rest festival and in 2018 it will be in Paris.

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The community actually is really loving West and we can take a look just at the developers away from stock overflow in 2015, so the first stable relation rust was the third most loved in some statistics- programming language in 2016 we were first and in 2050 17. We were first again.

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Rest in production so.

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Is rest is enough stable, actually to put some Rosco non production and yes, there is a lot of companies that are using rust in production, modular, OVH, clever cloud, Dropbox or Google and PM editor. There is more than 100 companies that are using Russian production today, so you can take a look at this website.

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It just displays all the all the the companies that are using Russian production, but I just want to focus on awesome project built in rest, servo, so servo is a web browser engine actually tend to be a prototype, and some part of fire falls directly like stylo, while were experimental things on server before Firefox.

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There is piston piston help you actually to build awesome games, the zai zai, it's a project from ji from Google tend to be your text, editor jazel, which is a Orin and ways my actually it's my favorite project, Redux, the redox operating system. It's a full feature operating system right and in rest, it's not only a camera. It's a full feature operating system. The project is really really huge. It works very well and yeah.

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If you are, if you are looking for something that you know la la ville and you are interested in operating system, radix is definitely one of the project. You must be interested so most so to-do lists based on cons actually today using rest and the first one actually is. The learning curve. Rest introduced new concept, new programming concept, and the advantage of that is that after rest, actually you have a better programming, because you, when you are switching from C C++, you say yeah, okay, but I. Don't want to do that or yeah.

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You have better. Actually, software, yes of the management and rests in 2018, will introduce some new ways actually to reduce the learning curve to learn rest connect, an emperor, Russ global community and they will focus on web service, web assembly, CLI, apps and embed, embedded yeah and better yeah embedded devices and I I put actually we care about your request because rest 2018 roadmap is actually a full list of what developers want the most actually in rest and in this year.

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So typically, this requests is for me a great message that, yes, the committee is huge and we care about your request and we were. We will do actually what to want the most for this programming language, so, okay, thank you. Sorry for the lag.

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Sorry for my stress, I was very appear to need to to make this talk, because it's my first year in for them it's my first talk and I'm really happy to talk about for me, one of the best programming language that have ever been created since last yeah, ten years and for the next ten years.

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So if you want to take a look at rest- and actually you should take a look at rest, where's the rest of your website, the rest book, HD forum and slack- if you want to to talk a little more about this wonderful programming language. Thank you.

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Yeah, oh sorry, so Russ is a system, programming language, but do people actually are using it for applications like games and Sophia that yeah? So definitely, yes, very some Korean talk about a programming language, I love all applications using rest. This is definitely actually one of the 2018 to do in the to-do list. You know in CLI, apps and various bastogne for games, for example.

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There is something like that, but since the respect um in language actually has been developed actually for systems- and you can just if you take a look at the syntax- is very similar to C++, for example, and not very similar for it's very verbose. Actually, if you want to to to to just to write high level applications, so the community is working on that just to read, use the syntax, for example, I had to let the compiler make something instead of a few.

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Oh, it's definitely something that is happening, but for now, in my opinion, it's chiller system programming language, but it's my opinion. Thank you.