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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Rust LATAM 2019</title>
<meta name="description" content="Rust Latam 2019">
<meta name="author" content="Julio Biason">
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border: none;
}
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list-style: none outside;
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font-style: italic;
font-weight: bold;
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background-color: rgba(0, 0, 0, 0.7);
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</style>
</head>
<body>
<div class="reveal">
<div class="slides">
<section>
<section data-background="_images/rustlatam.png" data-header>
<h1 class="semi-opaque">Rust Latam 2019</h1>
</section>
</section>
<section>
<section>
<img src="_images/avatar-20170726.png" alt="Me" style="float:left;width:200px;" class="no-border">
<div>
<ul class="empty">
<li>Júlio Biason</li>
<li>https://functional.cafe/@juliobiason</li>
<li>julio.biason@pm.me</li>
<li><a href="http://presentations.juliobiason.net">http://presentations.juliobiason.net</a></li>
</ul>
</div>
</section>
</section>
<section>
<section>
<img src="_images/rustlatam-travel.png" alt="" class="stretch">
<aside class="notes">
O Rust Latam foi o primeiro evento de Rust na América
Latina e aconteceu em Montevidéo, a 815km de Porto
Alegre.
</aside>
</section>
<section>
<img src="_images/several-song-filled-hours-later.jpg" alt="" class="stretch">
</section>
</section>
<section>
<section>
<h2>Workshops</h2>
<h4>
<a href="https://rustwasm.github.io/book/game-of-life/implementing.html">
Learning WebAssembly and Rust
</a>
</h4>
<aside class="notes">
No primeiro dia, eu fui no workshop de webassembly.
Foi uma apresentação bem introdutória, inclusive
para quem não conhecia Rust, mas que me ajudou um
bocado a entender o Borrow Checker.
A apresentação das ferramentas foi bem completa,
mas a parte de webassembly foi totalmente "chupada"
do livro do RustWasm.
Mesmo assim, foi uma baita apresentação.
</aside>
</section>
</section>
<section>
<section>
<img class="stretch" src="_images/the-next-day.jpg" alt="">
</section>
<section>
<h2>Talks Day</h2>
</section>
</section>
<section>
<section>
<h2>
<a href="https://nikomatsakis.github.io/rust-latam-2019/#1">
Opening Keynote
</a>
</h2>
<h3>Niko Matsakis</h3>
</section>
<section>
<p>História do Rust</p>
</section>
<section>
<img class="stretch" src="_images/rustlatam-openingkeynote1.png" alt="">
</section>
<section>
<img class="stretch" src="_images/rustlatam-openingkeynote2.png" alt="">
</section>
<section>
<img class="stretch" src="_images/rustlatam-openingkeynote3.png" alt="">
</section>
<section>
<img class="stretch" src="_images/rustlatam-openingkeynote4.png" alt="">
</section>
<section>
<p>"Rust is Open"</p>
</section>
</section>
<section>
<section>
<h2>
<a href="https://docs.google.com/presentation/d/140eKS9HLAfpb1Qi5J9xBpUcuxIhGDIejH7B8N2pmW5M/edit#slide=id.p1">
Defense Against The Wrong Logic: Proactive Rust Coding
</a>
</h2>
<h3>Michael Gattozzi</h3>
</section>
<section>
<p><code>type</code> é para áliases.</p>
<pre><code class="hljs rust" data-trim>
type Farenheit = i32;
type Celsius = i32;
fn is_it_hot(t: Farenheit) -&gt; bool;
let temp: Celsius = 32;
is_it_hot(temp);
</code></pre>
</section>
<section>
<pre><code class="hljs rust" data-trim>
struct Celsius(i32);
struct Farenheit(i32);
</code></pre>
</section>
<section>
<pre><code class="hljs rust" data-trim>
impl Into&lt;Celsius&gt; for Farenheit {
fn into(c: Celsius) -&gt; Self {
Self(((c.0 + 9) / 5) as i32 + 32);
}
}
is_it_hot(temp.into());
</code></pre>
</section>
<section>
<img class="stretch" src="_images/rustlatam-defensive.png" alt="">
</section>
</section>
<section>
<section>
<h2>
<a href="https://slides.com/otaviopace/deck-5#/">
Interop with Android, IOS and WASM in the same project
</a>
</h2>
<h3>Otávio Pace</h3>
</section>
<section>
<h3>FFI</h3>
<table>
<thead>
<tr>
<th>OS</th>
<th>How?</th>
</tr>
</thead>
<tbody>
<tr>
<td>iOS</td>
<td>C integration</td>
</tr>
<tr>
<td>Android</td>
<td>JNI</td>
</tr>
<tr>
<td>Web</td>
<td>WASM</td>
</tr>
</tbody>
</table>
</section>
<section>
<pre><code class="hljs rust" data-trim>
mod common;
#[cfg(target_os = "android")]
mod android;
#[cfg(target_os = "ios")]
mod ios;
#[cfg(target_arch = "wasm32")]
mod wasm;
</code></pre>
</section>
</section>
<section>
<section>
<h2>Rebuilding the Stack for Serverless</h2>
<h3>Sergio Benitez</h3>
</section>
<section>
<h4>Cold Start Preformance</h4>
<table>
<thead>
<tr>
<th>Service</th>
<th>Time</th>
</tr>
</thead>
<tbody>
<tr>
<td>AWS Lambda</td>
<td>~1.5s</td>
</tr>
<tr>
<td>Google Cloud Functions</td>
<td>&gt;2s</td>
</tr>
<tr>
<td>Fastly Terrarium (WASM)</td>
<td>~500ms</td>
</tr>
<tr>
<td>$2.50 VPS + NGINX</td>
<td>~30ms</td>
</tr>
</tbody>
</table>
</section>
<section>
<h4>Idea</h4>
<ul>
<li>Load executable directly into memory</li>
<li>Run code</li>
</ul>
</section>
</section>
<section>
<section>
<h2>WebAssembly with Rust</h2>
<h3>Kevin Hoffman</h3>
</section>
<section>
<p>
Autor do livro
<a href="https://pragprog.com/book/khrust/programming-webassembly-with-rust">Programming WebAssembly with Rust</a>
</p>
</section>
<section>
<img class="stretch" src="_images/rustlatam-asmjs.jpg" alt="">
</section>
</section>
<section>
<section>
<h2>
<a href="https://estebank.github.io/rust/">
Friendly Ferris: Developing Kind Compiler Errors
</a>
</h2>
<h3>Esteban Kuber</h3>
</section>
</section>
<section>
<section>
<h2>
<a href="https://rustlatam.org/assets/slides/proc-macros-sliced-bread.pdf">
Procedural Macros vs Sliced Bread
</a>
</h2>
<h3>Alex Crichton</h3>
</section>
<section>
<pre><code class="hljs rust" data-trim>
#[proc_macro]
pub fn println(input: TokenStream) -&gt; TokenStream
{
// ???
}
</code></pre>
</section>
</section>
<section>
<section>
<h2><a href="https://speakerdeck.com/skade/the-power-of-the-where-clause">The Power of the "Where" Clause</a></h2>
<h3>Florian Gilcher</h3>
</section>
<section>
<p>"Don't start out very generic, refactor towards it!"</p>
</section>
<section>
<pre><code class="hljs rust" data-trim>
fn debug_iter&lt;I&gt;(iter: I)
where
I: Iterator,
I::Item: Debug
{
// ...
}
</code></pre>
</section>
<section>
<pre><code class="hljs rust" data-trim>
trait State { }
trait TerminalState { }
</code></pre>
</section>
<section>
<pre><code class="hljs rust" data-trim>
trait TransitionTo&lt;S&gt;
where S: State,
Self: State
{
fn transition(self) -&gt; S;
}
trait Terminate
where Self: TerminalState
{
fn terminate(self);
}
</code></pre>
</section>
<section>
<pre><code class="hljs rust" data-trim>
struct Start;
impl State for Start {}
struct Loop;
impl State for Loop {}
struct Stop;
impl State for Stop {}
impl TerminalState for Stop {}
</code></pre>
</section>
<section>
<pre><code class="hljs rust" data-trim>
impl TransitionTo&lt;Loop&gt; for Start {
fn transition(self) -&gt; Loop { ... }
}
impl TransitionTo&lt;Loop&gt; for Loop {
fn transition(self) -&gt; Loop { ... }
}
impl TransitionTo&lt;End&gt; for Loop {
fn transition(self) -&gt; End { ... }
}
impl Terminate for End {
fn terminate(self) { ... }
}
</code></pre>
</section>
<section>
<pre><code class="hljs rust" data-trim>
fn main() {
let initial = Start;
let next: Loop = initial.transition();
let next: Loop = next.transition();
let next: End = next.transition();
next.terminate();
}
</code></pre>
</section>
</section>
<section>
<section>
<h2>Closing Keynote</h2>
<h3>Without Boats</h3>
</section>
<section>
<p>Estado geral do <code>async</code> em Rust.</p>
</section>
<section>
<img class="stretch" src="_images/rustlatam-async1.jpg" alt="">
</section>
<section>
<img class="stretch" src="_images/rustlatam-async2.jpg" alt="">
</section>
</section>
<section data-background='_images/thats-all-folks.jpg'>
<section></section>
</section>
</div>
</div>
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