h:<wbr>by:)</a>
        
<div class="comment collapse" id="comment-func-starts-with_by_"><div class="p">
    <p>Returns a Boolean value indicating whether the initial elements of the
sequence are equivalent to the elements in another sequence, using
the given predicate as the equivalence test.</p>

<p>The predicate must be a <em>equivalence relation</em> over the elements. That
is, for any elements <code>a</code>, <code>b</code>, and <code>c</code>, the following conditions must
hold:</p>

<ul><li><code>are