lass="keyword">val</span> create : <span>jobs:int</span> <span>&#45;&gt;</span> <span>child_prologue:<span>(unit <span>&#45;&gt;</span> unit)</span></span> <span>&#45;&gt;</span> <span>f:<span><span>(<span class="type-var">'work</span>, <span class="type-var">'result</span>)</span> <a href="../index.html#type-doer">doer</a></span></span> <span>&#45;&gt;</span> <span>child_epilogue:<span>(unit <span>&#45;&gt;</span> <span class="type-var">'final</span>)</span></span> <span>&#45;&gt;</span> <span>tasks:<span