l">operator ==</a></li>
    
    
    
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  <div id="dartdoc-main-content" class="col-xs-12 col-sm-9 col-md-8 main-content">
      <div><h1>cast&lt;<wbr><span class="type-parameter">RS</span>, <span class="type-parameter">RT</span>&gt; method</h1></div>

    <section class="multi-line-signature">
      <span class="returntype"><a href="dart-async/StreamTransformer-class.html">StreamTransformer</a><span class="signature">&lt;<wbr><span class="type-parameter">RS</spa