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<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>
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<span class="keyword">struct</span> <span class="type">Foo</span> {
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<span class="keyword">pub</span> <span class="field">x</span>: <span class="type.builtin">i32</span>,
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<span class="keyword">pub</span> <span class="field">y</span>: <span class="type.builtin">i32</span>,
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}
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<span class="keyword">fn</span> <span class="function">foo</span><<span class="type.param">T</span>>() -> <span class="type.param">T</span> {
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<span class="macro">unimplemented</span><span class="macro">!</span>();
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<span class="function">foo</span>::<<span class="type.builtin">i32</span>>();
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}
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<span class="comment">// comment</span>
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<span class="keyword">fn</span> <span class="function">main</span>() {
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<span class="macro">println</span><span class="macro">!</span>(<span class="string">"Hello, {}!"</span>, <span class="literal.numeric">92</span>);
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<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>();
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<span class="keyword.control">if</span> <span class="keyword">true</span> {
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<span class="variable.mut">vec</span>.<span class="text">push</span>(<span class="type">Foo</span> { <span class="field">x</span>: <span class="literal.numeric">0</span>, <span class="field">y</span>: <span class="literal.numeric">1</span> });
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}
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<span class="keyword.unsafe">unsafe</span> { <span class="variable.mut">vec</span>.<span class="text">set_len</span>(<span class="literal.numeric">0</span>); }
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<span class="keyword">let</span> <span class="keyword">mut</span> <span class="variable.mut">x</span> = <span class="literal.numeric">42</span>;
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<span class="keyword">let</span> <span class="variable.mut">y</span> = &<span class="keyword">mut</span> <span class="variable.mut">x</span>;
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<span class="keyword">let</span> <span class="variable">z</span> = &<span class="variable.mut">y</span>;
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<span class="variable.mut">y</span>;
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}
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<span class="keyword">enum</span> <span class="type">E</span><<span class="type.param">X</span>> {
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<span class="constant">V</span>(<span class="type.param">X</span>)
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}
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<span class="keyword">impl</span><<span class="type.param">X</span>> <span class="type">E</span><<span class="type.param">X</span>> {
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<span class="keyword">fn</span> <span class="function">new</span><<span class="type.param">T</span>>() -> <span class="type">E</span><<span class="type.param">T</span>> {}
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}</code></pre>
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