Cool things about rust

5 years ago · 3b8d5d9f60
3 changed files with 369 additions and 0 deletions
--- a/_images/rust.png
+++ b/_images/rust.png
--- a/cargo-cult.html
+++ b/cargo-cult.html
@ -62,6 +62,10 @@
                font-style: italic;
                font-weight: bold;
            }
+
+			.semi-opaque {
+				background-color: rgba(0, 0, 0, 0.7);
+			}
        </style>
    </head>

--- a/rust-legal.html
+++ b/rust-legal.html
@ -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>