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A few more technical bits

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Julio Biason 5 years ago
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      quick-rust.html

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@ -122,25 +122,23 @@
<img class="fragment" src="_images/AYV1X0yv.png" alt="" style="width:100px;margin:0">
</h2>
<p>
<span class="fragment">Basic</span>
<span class="fragment"> (com números e estruturado)</span>
<span class="fragment">, dBase III Plus</span>
<span class="fragment">, Clipper</span>
<span class="fragment">, Pascal</span>
<span class="fragment">, Cobol</span>
<span class="fragment">, Delphi (ObjectPascal)</span>
<span class="fragment">, C</span>
<span class="fragment">, C++</span>
<span class="fragment">, ActionScript (Flash)</span>
<span class="fragment">, PHP</span>
<span class="fragment">, JavaScript</span>
<span class="fragment">, Python</span>
<span class="fragment">, Objective-C</span>
<span class="fragment">, Clojure</span>
<span class="fragment">, Java</span>
<span class="fragment">, Scala</span>
<span class="fragment"><strong>, Rust.</strong></span>
<p class="fragment">
Basic (com números e estruturado),
dBase III Plus,
Clipper,
Pascal,
Cobol,
Delphi (ObjectPascal),
C,
C++,
ActionScript (Flash),
PHP,
JavaScript,
Python,
Objective-C,
Clojure,
Java,
Scala<strong>, Rust.</strong>
</p>
<aside class="notes">
@ -220,9 +218,7 @@ fn main() {
</section>
<section>
<h3>Meu Primeiro Rust</h3>
<code>cargo init</code>
<h3><code>cargo init</code></h3>
<aside class="notes">
Apesar do compilar do rust ser o `rustc`, a linguagem vem
@ -268,11 +264,11 @@ fn main() {
<section>
<section>
<h3>Mas De Volta Ao Rust</h3>
<h3>De Volta Ao Rust - Static Typed</h3>
<pre><code class="rust">
fn main() {
let a:u8 = 2;
let a: u8 = 2;
println!("{}", a);
}
</code></pre>
@ -319,9 +315,11 @@ fn main() {
irá encontrar o melhor tipo que "caiba" o valor e seja
eficiente para a máquina destino.
</aside>
</section>
<section>
<section>
<h3>Mas De Volta ao Rust</h3>
<h3>De Volta ao Rust - Pattern Matching</h3>
<pre><code class="rust">
fn factorial(i: u64) -&gt; u64 {
@ -346,9 +344,11 @@ fn factorial(i: u64) -&gt; u64 {
`n`, e a expressão termina com esse valor multiplicado
pelo fatorial dele menos 1.
</aside>
</section>
<section>
<section>
<h3>Mas De Volta ao Rust</h3>
<h3>De Volta ao Rust - Returns are not necessary</h3>
<pre><code class="rust">
fn is_pred(i: u64) -&gt; Bool {
@ -370,7 +370,7 @@ fn is_pred(i: u64) -&gt; Bool {
</section>
<section>
<h3>Mas De Volta ao Rust</h3>
<h3>De Volta ao Rust - Returns are not necessary</h3>
<pre><code class="rust">
fn is_pred(i: u64) -&gt; Bool {
@ -382,9 +382,11 @@ fn is_pred(i: u64) -&gt; Bool {
Uma forma mais simples de escrever a função anterior.
</aside>
</section>
</section>
<section>
<section>
<h3>Mas De Volta ao Rust</h3>
<h3>De Volta ao Rust - Enums</h3>
<pre><code class="rust">
enum IPAddr {
@ -423,6 +425,79 @@ match home {
</section>
</section>
<section>
<section>
<h3>De Volta ao Rust - No OO</h3>
</section>
<section>
<h3>No OO</h3>
<pre><code class="rust">
struct MyStruct {
a_field: String,
r_a: [2; 10u64],
}
</code></pre>
</section>
<section>
<h3>No OO - But "functions in structs"</h3>
<pre><code class="rust">
impl MyStruct {
fn first_element(&amp;self) -&gt; u64 {
self.r_a.get(1)
}
}
</code></pre>
</section>
<section>
<h3>No OO - But Traits</h3>
<pre><code class="rust">
trait Summarize {
fn summarize(&amp;self) -&gt; String;
}
</code></pre>
</section>
<section>
<h3>No OO - But Traits</h3>
<pre><code class="rust">
impl Summarize for MyStruct {
fn summarize(&amp;self) -&gt; String {
self.a_field
}
}
</code></pre>
</section>
<section>
<h3>No OO - But Generics</h3>
<pre><code class="rust">
fn make_summary&lt;T&gt;(summarizable: T) {
T.summarize()
}
</code></pre>
</section>
<section>
<h3>No OO - But Generic Traits</h3>
<pre><code class="rust">
fn make_summary&lt;T&gt;(summarizable: T)
where T: Summarize
{
T.summarize()
}
</code></pre>
</section>
</section>
<section>
<section>
<h2>E Aquela "Segurança de Memória"?</h2>
@ -432,7 +507,7 @@ match home {
<h3>1. No Null Pointers</h3>
<pre><code class="rust">
match may_not_exist(value: Option&lt;String&gt;) {
fn may_not_exist(value: Option&lt;String&gt;) {
match value {
Some(the_string) =&gt; println!("I got a string! {}", the_string),
None =&gt; println!("I got nothing")

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