Add introduction-to-rust-talk

2024-12-18 18:29:54 +00:00 · 2018-01-21 20:48:04 +11:00 · 2018-01-21 20:48:04 +11:00 · eb63287b40
commit eb63287b40
parent 11caab555c
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--- a/content/screen.sass
+++ b/content/screen.sass
@ -135,6 +135,9 @@ img.cover-photo
  display: block
  margin: 0 auto
 video
  max-width: 100%
 body > header
  font-family: $ans-serif
  font-size: 18px
--- a/content/technical/2017/09/rust-tools-talk.md
+++ b/content/technical/2017/09/rust-tools-talk.md
@ -6,7 +6,7 @@ that brings and how using and promoting these tools can help
 with the wider adoption of Rust in the development community. I demonstrated
 a selection of such tools.
-A video of the talk will be made available, but it's not ready yet.
+A [video of the talk is on YouTube](https://www.youtube.com/watch?v=4-H6Hn_i4PQ).
 The [slides are available online][slides]. The presenter notes I wrote for
 myself are included below.
--- a/content/technical/2018/01/introduction-to-rust-talk.md
+++ b/content/technical/2018/01/introduction-to-rust-talk.md
@ -0,0 +1,25 @@
 A couple of weeks ago I gave an introduction to Rust talk at our techa all
 hands meeting. The talk was a quick 30 minute introduction to the language that
 covered:
 * Where the project came from, where it fits, and what it's trying to solve.
 * Some of the main features and tools.
 * Some core concepts.
 * Live coding a little demo program.
 You can watch a recording of the talk below, or:
 * [Watch on YouTube]
 * [Download the video][Download]
 * [View the slides online][slides]
 * [Check out the code on GitHub][slides-source]
 <figure>
  <video src="/images/2018/introduction-to-rust-talk.mp4" width="1360" preload="meta" controls="controls"></video>
  <figcaption>Introduction to Rust Video</figcaption>
 </figure>
 [Watch on YouTube]: https://youtu.be/dRXePp1T9ZM
 [Download]: /images/2018/01/introduction-to-rust-talk.mp4
 [slides]: /technical/2018/01/introduction-to-rust-talk/slides/
 [slides-source]: https://github.com/wezm/rust-intro-talk
--- a/content/technical/2018/01/introduction-to-rust-talk.yaml
+++ b/content/technical/2018/01/introduction-to-rust-talk.yaml
@ -0,0 +1,11 @@
 ---
 title: Introduction to Rust Talk
 extra: "A whirlwind introduction to Rust that I gave at work in two parts: An intro to the language and live coding a little demo program."
 kind: article
 section: technical
 created_at: 2018-01-21 19:59:00.000000000 +11:00
 keywords:
 - rust
 - presentation
 - video
 short_url: 
--- a/output/images/2018/introduction-to-rust-talk.mp4
+++ b/output/images/2018/introduction-to-rust-talk.mp4
--- a/output/technical/2018/01/introduction-to-rust-talk/slides/images/benchmarks.png
+++ b/output/technical/2018/01/introduction-to-rust-talk/slides/images/benchmarks.png
--- a/output/technical/2018/01/introduction-to-rust-talk/slides/images/crates-io.png
+++ b/output/technical/2018/01/introduction-to-rust-talk/slides/images/crates-io.png
--- a/output/technical/2018/01/introduction-to-rust-talk/slides/images/ferris.gif
+++ b/output/technical/2018/01/introduction-to-rust-talk/slides/images/ferris.gif
--- a/output/technical/2018/01/introduction-to-rust-talk/slides/images/undefined-method-nil.png
+++ b/output/technical/2018/01/introduction-to-rust-talk/slides/images/undefined-method-nil.png
--- a/output/technical/2018/01/introduction-to-rust-talk/slides/index.html
+++ b/output/technical/2018/01/introduction-to-rust-talk/slides/index.html
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 <!DOCTYPE html>
 <html>
  <head>
    <title>Introduction to Rust</title>
    <meta charset="utf-8">
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      .segfaults img {
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--- a/output/technical/2018/01/introduction-to-rust-talk/slides/remark-latest.min.js
+++ b/output/technical/2018/01/introduction-to-rust-talk/slides/remark-latest.min.js
--- a/output/technical/2018/01/introduction-to-rust-talk/slides/slides.md
+++ b/output/technical/2018/01/introduction-to-rust-talk/slides/slides.md
@ -0,0 +1,435 @@
 class: center, middle, ferris
 Introduction to Rust
 ====================
 Wesley Moore
 ------------
 ![Ferris the Rustacean animation](images/ferris.gif)
 ---
 # Agenda
 1. Features
 2. Tooling
 3. Concepts
 4. Demo
 5. Questions
 ---
 # Introduction
 ```rust
 fn main() {
  println!("Rust Introduction");
 }
 ```
 > **Rust** is a systems programming language that runs blazingly fast, prevents
 > segfaults, and guarantees thread safety. 
 — [rust-lang.org](https://www.rust-lang.org/)
 ---
 # Systems Programming Language
 * Compiles to native code.
 --
 * Aims to solve the same sorts of problems that C and C++ are used to solve but
  with improved safety.
 --
 * Also seeing use in:
 --
  * Web (front and backend)
 --
  * Operating systems ([Redox OS][redox])
 --
  * Embedded systems (microcontrollers)
 ---
 # Runs Blazingly Fast
 ![Benchmarks Chart](images/benchmarks.png)
 ---
 # Runs Blazingly Fast
 * No interpreter, no runtime.
 --
 * Memory safety without garbage collection.
 --
 * Zero cost abstractions.
 ---
 class: segfaults
 # Prevents Segfaults
 * No `nil`, `NULL` or other [billion dollar mistakes][billion-dollar-mistake].
 ![undefined method for nil:NilClass](images/undefined-method-nil.png)
 This is not a thing. At all. Ever.
 .center[[billion-dollar-mistake]: https://www.infoq.com/presentations/Null-References-The-Billion-Dollar-Mistake-Tony-Hoare]
 ---
 # Guarantees Thread Safety
 * Strongly, statically typed with an emphasis on safety and correctness.
 --
 * Ownership model tracks owner and lifetime of memory.
 --
 * No data races: Compiler knows which thread owns what data.
 --
 * This leads to, "[Fearless Concurrency][fearless-concurrency]".
 > Mozilla made two previous attempts to parallelize its style system in C++,
 > and both of them failed. But Rust’s fearless concurrency has made parallelism
 > practical!
 — [Fearless Concurrency in Firefox Quantum](https://blog.rust-lang.org/2017/11/14/Fearless-Concurrency-In-Firefox-Quantum.html) (Nov 2017)
 ---
 # Strong Static Type System
 * Do more at compile time so fewer tests and runtime checks are required.
 --
 * Concepts mostly familiar. No need to learn an entirely new paradigm.
 --
 * Traits and generics instead of objects and inheritance.
 --
 * Type inference reduces the need to provide type annotations.
 --
 * Refactor with impunity — even in large code bases.
 ---
 # Tooling
 Official distribution includes: `cargo`
 --
 :
 * Build tool (no Makefiles)
 --
 * Package manager (like bundler)
 --
 * Test runner
 --
 * Documentation generator
 ---
 ## Releases
 Generally managed with `rustup`
 --
 :
 * Official toolchain manager (like rbenv)
 --
 * New releases every 6 weeks
  * Committed to backwards compatibility in every release.
 ---
 class: crates
 # Crates
 * Rust favours a small, stable standard library.
 * Crates are the equivalent of Ruby gems. They are published to
  [crates.io](https://crates.io/).
 ![screenshot of crates.io](images/crates-io.png)
 ---
 # Community and Direction
 * RFC process.
 --
 * Systematic improvement.
 --
 * Emphasis on inclusion and building a friendly community.
 ---
 class: center, middle, bigger
 Concepts
 ========
 ---
 # Functions
 ```rust
 fn add(left: i32, right: i32) -> i32 {
    left + right
 }
 fn main() {
    let sum = add(2, 3);
 }
 ```
 ---
 # Conditionals: if
 ```rust
 let temperature: i32 = 29;
 if temperature > 25 {
    println!("Wesley is happy");
 }
 else {
    println!("Too cold");
 }
 ```
 ---
 # Conditionals: match
 Can match structure and values:
 ```rust
 let month = "jan";
 match month {
    "jan" => 1,  "feb" => 2,
    "mar" => 3,  "apr" => 4,
    "may" => 5,  "jun" => 6,
    "jul" => 7,  "aug" => 8,
    "sep" => 9,  "oct" => 10,
    "nov" => 11, "dec" => 12,
    _     => panic!("invalid month"),
 };
 ```
 ---
 # Loops
 ```rust
 let numbers = [1, 2, 3];
 for i in numbers.iter() {
    // do something
 }
 for i in 0..10 {
    // do something
 }
 ```
 Also less frequently used commonly used `loop` and `while`.
 ---
 # Functional or Imperative
 ```rust
 fn variance_mean(data: &[f64], mean: f64) -> f64 {
    let mut sum = 0.;
    for d in data {
        sum += (d - mean).powf(2.0);
    }
    sum / data.len() as f64
 }
 ```
 Code from [hydromath] crate by Andrew MacDonald.
 ---
 # Functional or Imperative
 ```rust
 fn variance_mean(data: &[f64], mean: f64) -> f64 {
    data.into_iter()
        .map(|d| (d - mean).powf(2.0))
        .sum::<f64>() / data.len() as f64
 }
 ```
 --
 You pay _no cost_ for using the higher level style, it compiles to identical
 machine code (I checked).
 ---
 # enums
 Type that represents one possibility of several variants. Variants may optionally
 carry data.
 ```rust
 enum SerialProtocol {
    Usb,
    Rs485,
    Rs232,
    I2C,
    Spi,
 }
 ```
 ---
 # structs
 Type that carries structured data.
 ```rust
 struct Person {
    name: String,
    age: i32,
    favourite_serial_protocol: SerialProtocol,
 }
 impl Person {
    fn name_and_age(&self) -> String {
        format!("{} is {} years old", self.name, self.age)
    }
 }
 ```
 ---
 # Option
 Instead of `nil` and `NULL` there is `Option`.
 * Used to represent something that may be absent.
 ```rust
 enum Option<T> {
    Some(T),
    None
 }
 ```
 ---
 # Result
 When something can succeed or fail with an error.
 * There are no exceptions in Rust, `Result` is how you handle errors.
 ```rust
 enum Result<T, E> {
    Ok(T),
    Err(E)
 }
 ```
 ---
 Demo
 ====
 Small tool that will determine a file's type from its extension:
 ```shell
 filetype src/main.rs somefile.rb
 ```
 Should give output like:
 ```
 Rust: src/main.rs
 Ruby: src/somefile.rb
 ```
 ---
 class: center, middle, bigger
 Demo
 ====
 ---
 class: center, middle, invert, bigger
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 Questions?
 ==========
 ---
 Credits
 =======
 * [Animated Ferris][animated-ferris] by A. L. Palmer, via [rustacean.net][rustacean].
 * Portions of this talk were derived from [A Very Brief Intro to Rust][rust-intro]  
  Copyright © 2016 Ashley Williams.
 * Benchmarks chart generated from data on [The Computer Language
  Benchmarks Game][benchmarks] on 10 Jan 2018.
 [rust-intro]: https://github.com/rustbridge/a-very-brief-intro-to-rust
 [animated-ferris]: https://www.behance.net/gallery/42774743/Rustacean
 [rustacean]: http://rustacean.net/
 [fearless-concurrency]: https://doc.rust-lang.org/book/second-edition/ch16-00-concurrency.html
 [redox]: https://www.redox-os.org/
 [hydromath]: https://github.com/amacd31/hydromath_rs
 [benchmarks]: https://benchmarksgame.alioth.debian.org/