class="optlabel">?state</span>:<a href="Checkpoint/index.html#type-state">Checkpoint.state</a> <span class="arrow">&#45;&gt;</span></span>
  <span><a href="Params/index.html#type-typ">Params.typ</a> <span class="arrow">&#45;&gt;</span></span>
  <span><span>(<span><a href="Algodiff/index.html#type-t">Algodiff.t</a> <span class="arrow">&#45;&gt;</span></span> <a href="Algodiff/index.html#type-t">Algodiff.t</a> * <span><span><a href="Algodiff/index.html#type-t">Algodiff.t</a> array</span> array</span>)</span> 