difier_kind">
        <span class="modifier"></span>
        <span class="kind">def</span>
      </span>
      <span class="symbol">
        <span class="name">concat</span><span class="params">(<span name="arrs">arrs: IndexedSeq[<a name="org.saddle.Vec" class="extype" href="../Vec.html">Vec</a>[<span name="scala.Boolean" class="extype">Boolean</span>]]</span>)</span><span class="result">: <a name="org.saddle.Vec" class="extype" href="../Vec.html">Vec</a>[<span name="scala.Boolean" class="extype">Boolean</s