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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | class:: Pcollect
summary:: Apply a function to a pattern
categories:: Streams-Patterns-Events>Patterns>Filter
related:: Classes/Pselect, Classes/Preject
description::
Modifies each value by passing it to the function.
classmethods::
method:: new
argument:: func
A link::Classes/Function::. Receives values from code::pattern::.
argument:: pattern
A link::Classes/Pattern::.
examples::
code::
(
var a, b;
a = Pcollect({ arg item; item * 3 }, Pseq(#[1, 2, 3],inf));
x = a.asStream;
9.do({ x.next.postln; });
)
::
The message code::collect:: returns a Pcollect when passed to a pattern. Note that because the pattern is converted to a link::Classes/Stream:: (more precisely a link::Classes/FuncStream::) the collect function is evaluated for one item each time the message code::next:: is passed.
code::
(
var a, b;
a = Pseq(#[1, 2, 3],inf).collect({ arg item; item * 3 });
a.postln;
x = a.asStream;
9.do({ x.next.postln; });
)
::
|