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44 <pre><code><span class="keyword">fn</span> <span class="function declaration">f</span><span class="parenthesis">(</span><span class="value_param declaration reference">ra_fixture</span><span class="colon">:</span> <span class="operator">&</span><span class="builtin_type">str</span><span class="parenthesis">)</span> <span class="brace">{</span><span class="brace">}</span>
45 <span class="keyword">fn</span> <span class="function declaration">main</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="brace">{</span>
46 <span class="function">f</span><span class="parenthesis">(</span><span class="string_literal">r"</span>
47 <span class="keyword">fn</span> <span class="function declaration">foo</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="brace">{</span>
48 <span class="function">foo</span><span class="parenthesis">(</span><span class="keyword">$0</span><span class="brace">{</span>
49 <span class="numeric_literal">92</span>
50 <span class="brace">}</span><span class="keyword">$0</span><span class="parenthesis">)</span>
51 <span class="brace">}</span><span class="string_literal">"</span><span class="parenthesis">)</span><span class="semicolon">;</span>
52 <span class="brace">}</span>