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39 <pre><code><span class="keyword">fn</span> <span class="function declaration">f</span><span class="punctuation">(</span><span class="value_param declaration">ra_fixture</span><span class="punctuation">:</span> <span class="operator">&</span><span class="builtin_type">str</span><span class="punctuation">)</span> <span class="punctuation">{</span><span class="punctuation">}</span>
40 <span class="keyword">fn</span> <span class="function declaration">main</span><span class="punctuation">(</span><span class="punctuation">)</span> <span class="punctuation">{</span>
41 <span class="function">f</span><span class="punctuation">(</span><span class="string_literal">r"</span>
42 <span class="keyword">fn</span> <span class="function declaration">foo</span><span class="punctuation">(</span><span class="punctuation">)</span> <span class="punctuation">{</span>
43 <span class="function">foo</span><span class="punctuation">(</span><span class="keyword">$0</span><span class="punctuation">{</span>
44 <span class="numeric_literal">92</span>
45 <span class="punctuation">}</span><span class="keyword">$0</span><span class="punctuation">)</span>
46 <span class="punctuation">}</span><span class="string_literal">"</span><span class="punctuation">)</span><span class="punctuation">;</span>
47 <span class="punctuation">}</span>