45 lines
894 B
Text
45 lines
894 B
Text
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#lang scribble/manual
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@(require (for-label racket))
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@title{UnaryOpFunction}
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represent a unary operation on a function@section{related}
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Classes/UnaryOpStream, Classes/Punop, Classes/BinaryOpFunction, Classes/NAryOpFunction, Overviews/Operators
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@section{categories}
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Core
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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{examples}
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@racketblock[
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a = 2.sqrt; // result is square root of two (approximate floating point).
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a = { b }.sqrt; // result is a UnaryOpFunction
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b = 2;
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a.value; // now it is evaluated, and the result is calculated
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b = 9;
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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 = a.sqrt;
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fork {
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15.do {
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(instrument: \default, note: [a.value, b.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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