://en.wikipedia.org/wiki/Equivalence_relation">equivalence relation</a>.</p>

    <h4>Declaration</h4>    
    <code class="language-swift">func startsWith&lt;OtherSequence : SequenceType where OtherSequence.Generator.Element == Generator.Element&gt;(other: OtherSequence, @noescape isEquivalent: (CodeUnit, CodeUnit) throws -&gt; Bool) rethrows -&gt; Bool</code>
    
        <h4>Declared In</h4>
        <a href="../../protocol/CollectionType/"><code>CollectionType</code></a>,    <a href="../../protocol/Seque