Good question.
It is documented in perlop, so it theoretically should be
an operator. OTOH it certainly works like a function.
It is supposed to be lower precedence than a list operator.
At least it is documented that way. So at one point
someone had in mind what that was supposed to mean.
But I am having some trouble (OK, a lot of trouble)
figuring out how to write code that could test for that
and demonstrate a difference...
Very specifically, could anyone figure out some sample
code that distinguishes between not and my_not after the
following code? (Other than the name and games with
overrides.)
sub my_not ($) { shift ? "" : 1; }
I certainly can't...
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