ff">diff</a> <span class="arrow">&#45;&gt;</span></span>
  <span class="xref-unresolved">Ppx_deriving_runtime</span>.unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-show_diff"><a href="#val-show_diff" class="anchor"></a><code><span><span class="keyword">val</span> show_diff : <span><a href="#type-diff">diff</a> <span class="arrow">&#45;&gt;</span></span> <span class="xref-unresolved">Ppx_deriving_runtime</span>.string</span></code></div></div><div class="odoc-sp