./apply.html" class="identifier">apply</a>&lt;x,y&gt;::type r;
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<tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><tt class="literal"><span class="pre">r</span></tt> is the result of <tt class="literal"><span class="pre">op</span></tt> application on arguments <tt class="literal"><span class="pre">x</span></tt>
and <tt class="literal"><sp