sVar</a> :: <a href="Expr.html#t:Expr" title="Expr">Expr</a> a -&gt; <a href="../base-4.11.1.0/Data-Bool.html#t:Bool" title="Data.Bool">Bool</a> <a href="src/Expr.html#hasVar" class="link">Source</a> <a href="#v:hasVar" class="selflink">#</a></p><div class="doc"><p>hasVar returns whether the expression or any of its children contains a variable expression.</p></div></div><div class="top"><p class="src"><a id="v:hashWithName" class="def">hashWithName</a> :: <a href="../base-4.11.1.0/Data-String.html#t:String