macro.opt_update.html 5.3 KB

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  8. <h1 class="fqn"><span class="in-band">Macro <a href="index.html">database</a>::<wbr><a class="macro" href="#">opt_update</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../clipboard.svg" width="19" height="18" alt="Copy item path"></button></span></h1><span class="out-of-band"><a class="srclink" href="../src/database/utils.rs.html#2-18">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><div class="docblock item-decl"><div class="example-wrap"><pre class="rust macro"><code><span class="macro">macro_rules!</span> <span class="ident">opt_update</span> {
  9. (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">conn</span>:<span class="ident">ident</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">query</span>:<span class="ident">expr</span> =&gt; (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">self</span>:<span class="ident">expr</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">constraint</span>:<span class="ident">expr</span>)) =&gt; { ... };
  10. (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">conn</span>:<span class="ident">ident</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">query</span>:<span class="ident">expr</span> =&gt; (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">self</span>:<span class="ident">expr</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">constraint</span>:<span class="ident">expr</span>), $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tail</span>:<span class="ident">tt</span>)<span class="op">+</span>) =&gt; { ... };
  11. }</code></pre></div>
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