ntegeger</p><pre><code class="ml">let validator input =
  let open Validator in
  build build_valid
  |&gt; validate input.age (int_min 13 &quot;Must be 13&quot;)</code></pre></dd></dl><dl><dt class="spec value" id="val-int_max"><a href="#val-int_max" class="anchor"></a><code><span class="keyword">val</span> int_max : int <span>&#45;&gt;</span> <span><span>(int, int, <span class="type-var">'err</span>)</span> <a href="index.html#type-validator_builder">validator_builder</a></span></code></dt><dd><p>Valida