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