pan><span class="keyword">val</span> alpha_num : <span>char <a href="#type-t">t</a></span></span></code></div><div class="spec-doc"><p><code>alpha_num</code> parses a character in range <code>A-Z</code> or <code>a-z</code> or <code>0-9</code>.</p><p>Examples</p><pre><code>module P = Reparse
open P

;;
let p = P.(take alpha_num) in
let v = P.parse_string p &quot;ab123ABCD&quot; in
v = [ 'a'; 'b'; '1'; '2'; '3'; 'A'; 'B'; 'C'; 'D' ]</code></pre></div></div><div class="odoc-spec"><div class="spec value" id="va