jbiason
/
Presentations
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
Browse Source

Cool things about rust

master
Julio Biason 6 years ago
parent
d1ebd98604
commit
3b8d5d9f60
3 changed files with 369 additions and 0 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Unified View
Diff Options
Show Stats Download Patch File Download Diff File
  1. BIN
      _images/rust.png
  2. 4
      cargo-cult.html
  3. 365
      rust-legal.html

BIN
_images/rust.png
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 4.5 KiB

4
cargo-cult.html
Unescape View File

@ -62,6 +62,10 @@
font-style: italic; font-style: italic;
font-weight: bold; font-weight: bold;
} }
.semi-opaque {
background-color: rgba(0, 0, 0, 0.7);
}
</style> </style>
</head> </head>

365
rust-legal.html
Unescape View File

@ -0,0 +1,365 @@
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Rust</title>
<meta name="description" content="O que Rust tem de legal">
<meta name="author" content="Julio Biason">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, minimal-ui">
<link rel="stylesheet" href="reveal.js/css/reveal.css">
<link rel="stylesheet" href="reveal.js/css/theme/night.css" id="theme">
<!-- Code syntax highlighting -->
<link rel="stylesheet" href="reveal.js/lib/css/zenburn.css">
<!-- Printing and PDF exports -->
<script>
var link = document.createElement( 'link' );
link.rel = 'stylesheet';
link.type = 'text/css';
link.href = window.location.search.match( /print-pdf/gi ) ? 'css/print/pdf.css' : 'css/print/paper.css';
document.getElementsByTagName( 'head' )[0].appendChild( link );
</script>
<!--[if lt IE 9]>
<script src="lib/js/html5shiv.js"></script>
<![endif]-->
<style type="text/css" media="screen">
.happy {
color: yellow;
}
.reveal section img {
border: none;
}
.reveal ul.empty {
list-style: none outside;
}
li {
display: block;
}
.cursor {
background-color: #666;
color: white;
}
img {
max-height: 90%;
}
td.seen {
font-style: italic;
font-weight: bold;
}
.semi-opaque {
background-color: rgba(0, 0, 0, 0.7);
}
</style>
</head>
<body>
<div class="reveal">
<div class="slides">
<section>
<section data-background="_images/rust.png" data-header>
<h1 class="semi-opaque">O Que Rust Tem de Legal</h1>
</section>
</section>
<section>
<section>
<h2>Borrow Checker</h2>
</section>
<section>
<pre><code>
a = 2
</code></pre>
</section>
<section>
"Variável <code>a</code> tem o valor 2"
</section>
<section>
<div>
"Posição de memória apontada por <code>a</code> tem o valor 2"
</div>
<div class="fragment">
<pre><code>
0x3f5cbf89 = 2
</code></pre>
</div>
</section>
<section>
<div>
A language that doesn't affect the way you think
about programming, is not worth knowing.
</div>
<div>
-- Alan Perlis, "ALGOL"
</div>
</section>
<section>
<pre><code>
fn main() {
let a = String::from("hello");
let _b = a;
println!("{}", a)
}
</code></pre>
</section>
<section>
<pre><code>
error[E0382]: borrow of moved value: `a`
--> src/main.rs:5:20
|
4 | let _b = a;
| - value moved here
5 | println!("{}", a)
| ^ value borrowed here after move
|
= note: move occurs because `a` has type `std::string::String`, which does not implement the `Copy` trait
</code></pre>
</section>
<section>
<pre><code>
fn main() {
let a = 2;
let b = a;
println!("{}", a);
println!("{}", b);
}
</code></pre>
</section>
<section>
<pre><code>
2
2
</code></pre>
</section>
<section>
<a href="https://swift.org/blog/swift-5-exclusivity/">Swift 5 Exclusivity Enforcement</a>
</section>
</section>
<section>
<section>
<h2>Imutabilidade por Default</h2>
</section>
<section>
<pre><code>
fn main() {
let a = 2;
a = 3;
println!("{}", a);
}
</code></pre>
</section>
<section>
<pre><code>
3 | let a = 2;
| -
| |
| first assignment to `a`
| help: make this binding mutable: `mut a`
4 | a = 3;
| ^^^^^ cannot assign twice to immutable variable
</code></pre>
</section>
<section>
<pre><code>
fn main() {
let mut a = 2;
a = 3;
println!("{}", a);
}
</code></pre>
</section>
</section>
<section>
<section>
<h2>Enums</h2>
</section>
<section>
<pre><code>
enum IpAddr {
V4,
V6
}
</code></pre>
</section>
<section>
<pre><code>
enum IpAddr {
V4(String),
V6(String),
}
</code></pre>
</section>
<section>
<pre><code>
let home = IpAddr::V4(String::from("127.0.0.1");
match home {
V4(address) => println!("IPv4 addr: {}", address),
V6(address) => println!("Ipv6 addr: {}", address),
}
</code></pre>
</section>
<section>
<pre><code>
enum Option&lt;T&gt; {
Some(T),
None
}
</code></pre>
</section>
</section>
<section>
<section>
<h2>Error Control</h2>
</section>
<section>
<pre><code>
try:
something()
except Exception:
pass
</code></pre>
</section>
<section>
<pre><code>
try {
something();
} catch (Exception ex) {
System.out.println(ex);
}
</code></pre>
</section>
<section>
<pre><code>
FILE* f = fopen("someting.txt", "wb");
fprintf(f, "Done!");
fclose(f);
</code></pre>
</section>
<section>
<div>
Onde o erro foi tratado nisso?
</div>
</section>
<section>
<pre><code>
enum Result&lt;T, E&gt; {
Ok(T),
Err(E),
}
</code></pre>
</section>
<section>
<pre><code>
File::create("something.txt") match {
Ok(fp) => fp.write_all(b"Hello world"),
Err(err) => println!("Failure! {}", err),
}
</code></pre>
</section>
<section>
<pre><code>
File::create("something.txt") match {
Ok(fp) => fp.write_all(b"Hello world") match {
Ok(_) => (),
Err(err) => println!("Can't write! {}", err),
}
Err(err) => println!("Failure! {}", err),
}
</code></pre>
</section>
<section>
<pre><code>
let mut file = File::create("something.txt).unwrap();
file.write(b"Hello world").unwrap();
</code></pre>
</section>
<section>
<pre><code>
let mut file = File::create("something.txt)?;
file.write(b"Hello world")?;
OK(())
</code></pre>
</section>
</section>
<section data-background='_images/thats-all-folks.jpg'>
</section>
</div>
</div>
<script src="reveal.js/lib/js/head.min.js"></script>
<script src="reveal.js/js/reveal.js"></script>
<script>
// Full list of configuration options available at:
// https://github.com/hakimel/reveal.js#configuration
Reveal.initialize({
controls: true,
progress: true,
history: true,
center: true,
// showNotes: true,
transition: 'slide', // none/fade/slide/convex/concave/zoom
// Optional reveal.js plugins
dependencies: [
{ src: 'reveal.js/lib/js/classList.js', condition: function() { return !document.body.classList; } },
{ src: 'reveal.js/plugin/markdown/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'reveal.js/plugin/markdown/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'reveal.js/plugin/highlight/highlight.js', async: true, callback: function() { hljs.initHighlightingOnLoad(); } },
{ src: 'reveal.js/plugin/zoom-js/zoom.js', async: true },
{ src: 'reveal.js/plugin/notes/notes.js', async: true }
]
});
</script>
</body>
</html>
Write Preview
Loading…
Cancel
Save