class="keyword">,</span> <span class="symbol">.f</span><span class="keyword">,</span> <span class="symbol">fun_value</span><span class="keyword">,</span> <span class="symbol">...</span><span class="keyword">,</span> <span class="argument">use_names</span>&nbsp;<span class="argument">=</span>&nbsp;<span class="number">TRUE</span><span class="keyword">)</span></pre>
    
    <h2>Arguments</h2>
    <dl>
      <dt>.x</dt>
      <dd>A vector.</dd>
      <dt>.f</dt>
      <dd>A function to be applied.</dd>
      