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TITLE:: Ptrace
summary:: Print out the results of a stream
related:: Classes/Stream, Classes/FilterPattern
categories:: Streams-Patterns-Events>Patterns
DESCRIPTION::
Print out the results of a stream while returning the original values.
Tracing a pattern is most commonly done by using the strong::.trace:: method directly on the pattern like this:
code::
Pbind(\degree, Pwhite(0,10)).trace.play
::
CLASSMETHODS::
METHOD:: new
ARGUMENT:: pattern
printOn this stream (default: link::Classes/Post::).
ARGUMENT:: key
when streaming events, post only this key.
ARGUMENT:: printStream
(describe argument here)
ARGUMENT:: prefix
string added to the printout to separate different streams.
returns:: Original values
INSTANCEMETHODS::
METHOD:: storeArgs
METHOD:: embedInStream
ARGUMENT:: inval
METHOD:: key
EXAMPLES::
code::
(
// An event pattern playing random scale degrees
p = Pbind(\dur, 0.125, \degree, Pwhite(0,10));
// Se what the value of the scale degrees are using trace
Ptrace(p, \degree, prefix: "Current scale degree: ").play
)
::
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