<span class="modifier_kind"><span class="modifier"></span> <span class="kind">def</span></span> <span class="symbol"><span class="name">reduce</span><span class="tparams">[<span name="Q">Q</span>, <span name="R">R</span>]</span><span class="params">(<span name="reduction">reduction: (<a href="../../scala/index.html#Vector[+A]=scala.collection.immutable.Vector[A]" name="scala.Vector" id="scala.Vector" class="extmbr">Vector</a>[<span name="provingground.learning.TypedPostResponse.reduce.Q" class="extype">Q</s