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+<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>
+<span class="keyword">fn</span> <span class="function declaration">main</span><span class="punctuation">(</span><span class="punctuation">)</span> <span class="punctuation">{</span>
+ <span class="function">f</span><span class="punctuation">(</span><span class="string_literal">r"</span>
+<span class="keyword">fn</span> <span class="function declaration">foo</span><span class="punctuation">(</span><span class="punctuation">)</span> <span class="punctuation">{</span>
+ <span class="function">foo</span><span class="punctuation">(</span>$0<span class="punctuation">{</span>
+ <span class="numeric_literal">92</span>
+ <span class="punctuation">}</span>$0<span class="punctuation">)</span>
+<span class="punctuation">}</span><span class="string_literal">"</span><span class="punctuation">)</span><span class="punctuation">;</span>
+<span class="punctuation">}</span>
+ </code></pre>
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