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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>
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>
