tml">operator ==</a></li>
    
    
    
    </ol>
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  <div class="col-xs-12 col-sm-9 col-md-8 main-content">
    <h1>withX method</h1>

    <section class="multi-line-signature">
      <span class="returntype"><a href="dart-typed_data/Float64x2-class.html">Float64x2</a></span>
      <span class="name ">withX</span>
(<wbr><span class="parameter" id="withX-param-x"><span class="type-annotation"><a href="dart-core/double-class.html">double</a></span> <span class="parameter-na