548 lines
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HTML
548 lines
15 KiB
HTML
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<!DOCTYPE HTML>
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<html lang="" >
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<title>hello world · hello world! bluesky</title>
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<meta name="generator" content="@gitbook-ng/gitbook 3.3.6">
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<meta name="author" content="syui">
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<a href="../">
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hello world! bluesky
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</a>
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<a href="../c1/">
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part 1
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.2.1" data-path="../c1/1.html">
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<a href="../c1/1.html">
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quick start
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<a href="../c1/2.html">
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example
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</a>
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<li class="chapter " data-level="1.3" data-path="../c2/">
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<a href="../c2/">
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part 2
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.3.1" data-path="../c2/1.html">
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<a href="../c2/1.html">
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bluesky
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</a>
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</li>
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<li class="chapter " data-level="1.3.2" data-path="../c2/2.html">
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<a href="../c2/2.html">
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terminal
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</a>
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</li>
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<li class="chapter " data-level="1.3.3" data-path="../c2/3.html">
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<a href="../c2/3.html">
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shell
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</a>
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<li class="chapter " data-level="1.3.4" data-path="../c2/4.html">
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<a href="../c2/4.html">
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rust
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="1.4" data-path="./">
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<a href="./">
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part 3
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</a>
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<ul class="articles">
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<li class="chapter active" data-level="1.4.1" data-path="1.html">
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<a href="1.html">
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hello world
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</a>
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<li class="chapter " data-level="1.4.2" data-path="2.html">
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<a href="2.html">
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seahorse
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</a>
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</li>
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<li class="chapter " data-level="1.4.3" data-path="3.html">
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<a href="3.html">
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reqwest
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="1.5" data-path="../c4/">
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<a href="../c4/">
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part 4
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.5.1" data-path="../c4/0.html">
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<a href="../c4/0.html">
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ai
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</a>
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<li class="chapter " data-level="1.5.2" data-path="../c4/1.html">
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<a href="../c4/1.html">
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config
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</a>
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<li class="chapter " data-level="1.5.3" data-path="../c4/2.html">
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<a href="../c4/2.html">
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mention
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</a>
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<li class="chapter " data-level="1.5.4" data-path="../c4/3.html">
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<a href="../c4/3.html">
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base64
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</a>
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<li class="chapter " data-level="1.6" data-path="../end/">
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<a href="../end/">
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end
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</nav>
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</div>
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<div class="book-body">
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<div class="body-inner">
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<div class="book-header" role="navigation">
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<!-- Title -->
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<h1>
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<i class="fa fa-circle-o-notch fa-spin"></i>
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<a href=".." >hello world</a>
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</h1>
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</div>
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<div class="page-wrapper" tabindex="-1" role="main">
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<div class="page-inner">
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<div id="book-search-results">
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<div class="search-noresults">
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<section class="normal markdown-section">
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<h3 id="init">init</h3>
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<p>First, create a program template in rust.</p>
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<pre><code class="lang-sh">mkdir -p ~/rust
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<span class="hljs-built_in">cd</span> ~/rust
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cargo init
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</code></pre>
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<pre><code class="lang-sh">.
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├── Cargo.toml
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└── src
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└── main.rs
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</code></pre>
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<p>You can create these files yourself or with <code>init</code>.</p>
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<div><p class="code-filename">Cargo.toml</p></div>
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<pre><code class="lang-toml"><span class="hljs-section">[package]</span>
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<span class="hljs-attr">name</span> = <span class="hljs-string">"rust"</span>
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<span class="hljs-attr">version</span> = <span class="hljs-string">"0.1.0"</span>
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<span class="hljs-attr">edition</span> = <span class="hljs-string">"2021"</span>
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<span class="hljs-comment"># See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html</span>
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<span class="hljs-section">
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[dependencies]</span>
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</code></pre>
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<div><p class="code-filename">src/main.rs</p></div>
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<pre><code class="lang-rust"><span class="hljs-function"><span class="hljs-keyword">fn</span> <span class="hljs-title">main</span></span>() {
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<span class="hljs-built_in">println!</span>(<span class="hljs-string">"Hello, world!"</span>);
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}
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</code></pre>
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<h4 id="editor">editor</h4>
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<p>Next, let's check the contents of the program.</p>
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<p>To check, use <code>editor</code> (editor). I use <code>vim</code>, but I would recommend <a href="https://visualstudio.microsoft.com" target="_blank">visual studio</a>.</p>
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<pre><code class="lang-sh">brew install vim
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vim src/main.rs
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</code></pre>
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<div><p class="code-filename">src/main.rs</p></div>
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<pre><code class="lang-rust"><span class="hljs-function"><span class="hljs-keyword">fn</span> <span class="hljs-title">main</span></span>() {
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<span class="hljs-built_in">println!</span>(<span class="hljs-string">"Hello, world!"</span>);
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}
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</code></pre>
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<p>This is a program that outputs the string `hello world!</p>
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<h4 id="build">build</h4>
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<p>You can <code>build</code> this src and convert it to <code>binary</code>, i.e., the app itself, so that you can run it on that computer.</p>
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<pre><code class="lang-sh">cargo build
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</code></pre>
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<div><p class="code-filename">target/debug/rust</p></div>
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<pre><code class="lang-sh">target
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└── debug
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├── rust ← binary
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└── rust.d
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</code></pre>
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<p>rust is a very good language because it is one-binary, meaning that the compiled result is a single file.</p>
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<pre><code class="lang-sh">$ ./target/debug/rust
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Hello, world!
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</code></pre>
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