a/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;functionName)</code></div>
<div class="col-last odd-row-color">
<div class="block">Gets function associated with the argument expression.</div>
</div>
<div class="col-first even-row-color"><code><a href="../Function.html" title="class in org.mariuszgromada.math.mxparser">Function</a></code></div>
<div class="col-second even-row-color"><span class="type-name-label">Expression.</span><code><a href="../Expression.