"src/Expr.html#assertDouble" class="link">Source</a> <a href="#v:assertDouble" class="selflink">#</a></p><div class="doc"><p>assertDouble asserts that any expression is actually a double expression.</p></div></div><div class="top"><p class="src"><a id="v:assertBytes" class="def">assertBytes</a> :: <a href="Expr.html#t:AnyExpr" title="Expr">AnyExpr</a> -&gt; <a href="../base-4.11.1.0/Data-Either.html#t:Either" title="Data.Either">Either</a> <a href="../base-4.11.1.0/Data-String.html#t:String" title="Data.Str