can is a method of UNIVERSAL, which means it can be called on any object. (All objects implicitly inherit from UNIVERSAL, even if they don't have any @ISA whatsoever.) It checks to see if there is an accept() method that could be called on $listen.

Confession: It does an Immortal Body good.

In reply to Re: Nonblocking IO Module by theorbtwo
in thread Nonblocking IO Module by perlknight

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