<style> body { margin: 0; } pre { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padding: 0.4em; } .comment { color: #7F9F7F; } .string { color: #CC9393; } .function { color: #93E0E3; } .parameter { color: #94BFF3; } .builtin { color: #DD6718; } .text { color: #DCDCCC; } .attribute { color: #94BFF3; } .literal { color: #BFEBBF; } .macro { color: #94BFF3; } .variable { color: #DCDCCC; } .variable\.mut { color: #DCDCCC; text-decoration: underline; } .keyword { color: #F0DFAF; } .keyword\.unsafe { color: #DFAF8F; } .keyword\.control { color: #F0DFAF; font-weight: bold; } </style> <pre><code><span class="attribute">#</span><span class="attribute">[</span><span class="attribute">derive</span><span class="attribute">(</span><span class="attribute">Clone</span><span class="attribute">,</span><span class="attribute"> </span><span class="attribute">Debug</span><span class="attribute">)</span><span class="attribute">]</span> <span class="keyword">struct</span> <span class="type">Foo</span> { <span class="keyword">pub</span> <span class="field">x</span>: <span class="type">i32</span>, <span class="keyword">pub</span> <span class="field">y</span>: <span class="type">i32</span>, } <span class="keyword">fn</span> <span class="function">foo</span><<span class="type">T</span>>() -> <span class="type">T</span> { <span class="macro">unimplemented</span><span class="macro">!</span>(); <span class="function">foo</span>::<<span class="type">i32</span>>(); } <span class="comment">// comment</span> <span class="keyword">fn</span> <span class="function">main</span>() { <span class="macro">println</span><span class="macro">!</span>(<span class="string">"Hello, {}!"</span>, <span class="literal">92</span>); <span class="keyword">let</span> <span class="keyword">mut</span> <span class="variable.mut">vec</span> = <span class="text">Vec</span>::<span class="text">new</span>(); <span class="keyword.control">if</span> <span class="keyword">true</span> { <span class="variable.mut">vec</span>.<span class="text">push</span>(<span class="type">Foo</span> { <span class="field">x</span>: <span class="literal">0</span>, <span class="field">y</span>: <span class="literal">1</span> }); } <span class="keyword.unsafe">unsafe</span> { <span class="variable.mut">vec</span>.<span class="text">set_len</span>(<span class="literal">0</span>); } <span class="keyword">let</span> <span class="keyword">mut</span> <span class="variable.mut">x</span> = <span class="literal">42</span>; <span class="keyword">let</span> <span class="variable.mut">y</span> = &<span class="keyword">mut</span> <span class="variable.mut">x</span>; <span class="keyword">let</span> <span class="variable">z</span> = &<span class="variable.mut">y</span>; <span class="variable.mut">y</span>; }</code></pre>