difier_kind">
        <span class="modifier"></span>
        <span class="kind">val</span>
      </span>
      <span class="symbol">
        <span title="gt4s: $colon$plus" class="name">:+</span><span class="result">: <span class="extype" name="scala.collection.:+">scala.collection.:+</span>.type</span>
      </span>
      
      
    </li><li name="scala#::" visbl="pub" class="indented0 " data-isabs="false" fullComment="no" group="Ungrouped">
      <a id=":::collection.immutable.::.type"></a><a id=":::scal