ass="constructor">EUnop</span> <span class="keyword">of</span> char * <a href="#type-t">t</a></span></code><div class="def-doc"><span class="comment-delim">(*</span><p>Unary operation</p><span class="comment-delim">*)</span></div></li></ol></div><div class="spec-doc"><p>The type of expressions</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-pp"><a href="#val-pp" class="anchor"></a><code><span><span class="keyword">val</span> pp : 
  <span><span class="xref-unresolved">Ppx_deri