Help/Core/BinaryOpFunction.html

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  30 <p class="p1"><span class="s1"><b>BinaryOpFunction<span class="Apple-tab-span"> </span></b></span><b>represent a binary oparation on a function</b></p>
  31 <p class="p2"><br></p>
  32 <p class="p1"><b>superclass: AbstractFunction</b></p>
  33 <p class="p2"><br></p>
  34 <p class="p1">Operating on functions instead of numbers, what results is not a result of the calculation, but a structure that represents that calculation.</p>
  35 <p class="p3"><br></p>
  36 <p class="p4">// example</p>
  37 <p class="p4"><span class="s2">a = 5 + 7; </span>// result is 12.</p>
  38 <p class="p4"><span class="s2">a = { b } + 7; </span>// result is<span class="Apple-converted-space">  </span>a BinaryOpFunction</p>
  39 <p class="p5">b = 5;</p>
  40 <p class="p4"><span class="s2">a.value; </span>// now it is evaluated, and the result is calculated</p>
  41 <p class="p5">b = 8;</p>
  42 <p class="p4"><span class="s2">a.value; </span>// again, with a different value.</p>
  43 <p class="p6"><br></p>
  44 <p class="p7"><span class="s2">see also: <a href="UnaryOpFunction.html"><span class="s3">UnaryOpFunction</span></a>, <a href="NAryOpFunction.html"><span class="s4">NAryOpFunction</span></a></span></p>
  45 <p class="p8"><span class="s2">related: <a href="../Streams-Patterns-Events/BinaryOpStream.html"><span class="s5">BinaryOpStream</span></a>, <a href="../Streams-Patterns-Events/Patterns/Pbinop.html"><span class="s6">Pbinop</span></a></span></p>
  46 <p class="p2"><br></p>
  47 <p class="p3"><br></p>
  48 <p class="p4">// sound example</p>
  49 <p class="p5">(</p>
  50 <p class="p5"><span class="s7">var</span> a = { 19.rand };</p>
  51 <p class="p5"><span class="s7">var</span> b = { [5, 8, 9].choose };</p>
  52 <p class="p5"><span class="s7">var</span> c = a + b;</p>
  53 <p class="p5">fork {</p>
  54 <p class="p5"><span class="Apple-tab-span">     </span>15.do {</p>
  55 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>(instrument: <span class="s8">\default</span>, note: [c.value, a.value]).play;</p>
  56 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>0.3.wait;</p>
  57 <p class="p5"><span class="Apple-tab-span">     </span>}</p>
  58 <p class="p5">}</p>
  59 <p class="p5">)</p>
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