ode">a</code>, string <code class="code">message</code> = null, string <code class="code">file</code> = __FILE__, size_t <code class="code">line</code> = __LINE__);

          </code>
        </p>
      </div>
    </div>
  </section>
</div>
<div class="ddoc_decl">
  <section class="section ddoc_sections">
  <div class="ddoc_summary">
  <p class="para">
    Used to assert that one value is equal to <code class="code">null</code>.

  </p>
</div>
<div class="ddoc_params">
  <h4>Parameters</h4>