5d8"><p>Returns a Boolean value indicating whether the sequence precedes another
sequence in a lexicographical (dictionary) ordering, using the given
predicate to compare elements.</p>
<p>The predicate must be a <em>strict weak ordering</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>
<blockquote>
<p>Note:
This method implements the mathematical notion of lexicographical ordering, which has no connection to Unicode.