May 26, 2018

Multiplex output to multiple output handles

The IOTee' constructor, given a list of output handles, returns a tied handle that can be written to but not read from. When written to using print or printf, it multiplexes the output to the list of handles originally passed to the constructor. As a shortcut, you can also directly pass a string or an array reference to the constructor, in which case IOFilenew’ is called for you with the specified argument or arguments.

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