&quot; in
    false
  with
  | P.Parser
      { offset = 0
      ; line_number = 0
      ; column_number = 0
      ; msg = &quot;[error]&quot;
      } -&gt;
    true
  | _ -&gt; false
in
v = true</code></pre></div></div></details></div><div class="odoc-spec"><div class="spec module" id="module-Let_syntax" class="anchored"><a href="#module-Let_syntax" class="anchor"></a><code><span><span class="keyword">module</span> </span><span><a href="Let_syntax/index.html">Let_syntax</a></span><span> : <span class="keyw