Sequential Operators
Sequential operators control the occurrences of operations in program. They can apply to the iteration of an operation, or to the succession of several operations at a single evaluation.
Sequential operators can be accessed via the OM Kernel / Control menu.
Repeat-n : Iteration
** Repeat-n ** evaluates something a number of times and collects the results in a list, so that the manual evaluation doesn’t have to be repeated.
Features
** Repeat-n has two default inputs :
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“self” takes any type of data, a function, or a lambda function.
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“num” takes a number.
The data assigned to “self” is repeated n times. The result is returned as a list by the output.
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Example
Here, repeat-n is applied to om-random to produce a random notes sequence.
Repeat-n evaluates om-random 15 times : each time, a random value is returned. The resulting list is returned to the pitches input of the factory box.
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Advanced Use of Iteration : OMLoop
More complex or specific iterative processes can be designed and controlled via the OMLoop module editor.
The Omloop Module
Sequence : Executing Several Tasks
Features
The ** sequence ** box executes a sequence of distinct operations.
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It has one default input and output. The “patch” input takes any kind of box.
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It can be added as many “oppatch” additional inputs - “patch” input q- as necessary :
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Multiple outputs can return the result of corresponding upstream operations to other boxes.
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Example
A chord-seq is generated while other tasks are executed.
When the chord-seq is evaluated, sequence performs three tasks :
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print “avant”,
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generate and print a random list of numbers,
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print “apres”.
Then, the value of its second output is returned to the “pitch” input of the chord-seq.
Note that without print, the Listener wouldn’t display the values the outputs of sequence. These values can be returned with an individual evaluation of each output.
References :
Contents :
- OpenMusic Documentation
- OM User Manual
- OpenMusic QuickStart