68 lines
1 KiB
Text
68 lines
1 KiB
Text
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#lang scribble/manual
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@(require (for-label racket))
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@title{Interval}
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range of integers@section{categories}
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Math
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@section{description}
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An Interval is a range of integers from a starting value to an ending value by some step value.
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@section{CLASSMETHODS}
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@section{method}
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new
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Create a new Interval.
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@racketblock[
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Interval(10, 30, 4);
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10 to: 30; // the message to creates an interval with step 1
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::
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]
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@section{INSTANCEMETHODS}
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@section{method}
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start
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The starting value of the interval.
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@section{method}
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end
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The ending value of the interval.
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@section{method}
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step
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The step value of the interval.
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@section{method}
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size
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Return the number of items in the interval.
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@racketblock[
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Interval(10, 30, 4).size.postln;
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::
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]
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@section{method}
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at
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Return the indexed item in the interval.
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@racketblock[
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Interval(10, 30, 4).at(3).postln;
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::
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]
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@section{method}
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do
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Evaluates function for each item in the interval. The function is passed two arguments, the item and an integer index.
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@racketblock[
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Interval(10, 30, 4).do({ arg item, i; item.postln });
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::
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]
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