ter">T</span>&gt;</span></span> <span class="parameter-name">source</span></span>)
      
    </section>
    <section class="desc markdown">
      <p>Write the elements of an iterable into a list.</p>
<p>This is a utility function that can be used to implement methods like
<a href="dart-core/List/setAll.html">setAll</a>.</p>
<p>The elements of <code>source</code> are written into <code>target</code> from position <code>at</code>.
The <code>source</code> must not contain more elements after writing the last
