<span class="symbol"><span class="implicit">ensuring</span><span class="params">(<span name="cond">cond: (<a href="" name="provingground.interface.Display" id="provingground.interface.Display" class="extype">Display</a>[<span name="provingground.interface.Display.A" class="extype">A</span>]) =&gt; <span name="scala.Boolean" class="extype">Boolean</span></span>, <span name="msg">msg: =&gt; <span name="scala.Any" class="extype">Any</span></span>)</span><span class="result">: <a href="" name="provingground.int