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isListener(File) -- whether a file is open for listening

Function: isListener
Usage:

isListener f
Inputs:
- f, a file
Outputs:
- a Boolean value, whether f is an open listener

See also

openListener -- open a port for listening

Ways to use this method:

isListener(File) -- whether a file is open for listening

The source of this document is in Macaulay2Doc/ov_system.m2:622:0.