64 lines
1.1 KiB
Text
64 lines
1.1 KiB
Text
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#lang scribble/manual
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@(require (for-label racket))
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@title{BinaryOpFunction}
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represent a binary operation on a function@section{categories}
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Core
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@section{related}
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Classes/UnaryOpFunction, Classes/NAryOpFunction, Classes/BinaryOpStream, Classes/Pbinop, Overviews/Operators
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@section{description}
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Operating on functions instead of numbers, what results is not a result of the calculation, but a structure that represents that calculation.
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@section{instanceMethods}
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@section{private}
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storeOn
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@section{method}
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value
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Executes each of the operand functions and then performs the selector on the result.
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@section{method}
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valueArray
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the same as link::#-value::
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@section{examples}
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@racketblock[
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// example
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a = 5 + 7; // result is 12.
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a = { b } + 7; // result is a BinaryOpFunction
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b = 5;
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a.value; // now it is evaluated, and the result is calculated
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b = 8;
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a.value; // again, with a different value.
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::
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]
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@racketblock[
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// sound example
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(
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var a = { 19.rand };
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var b = { [5, 8, 9].choose };
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var c = a + b;
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fork {
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15.do {
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(instrument: \default, note: [c.value, a.value]).play;
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0.3.wait;
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}
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}
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)
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::
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]
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