n class="parameter-name">source</span>, {</span> <span class="parameter" id="tryParse-param-radix"><span class="type-annotation"><a href="dart-core/int-class.html">int</a></span> <span class="parameter-name">radix</span></span> })
      
    </section>
    <section class="desc markdown">
      <p>Parses <code>source</code> as a, possibly signed, integer literal and returns its
value.</p>
<p>As <a href="dart-core/BigInt/parse.html">parse</a> except that this method returns <code>null</code> if the input is n