As already said my has a compile-time effect of declaring a lexical variable and the run time effect of initialization.

So this variable is a lexical which just isn't resetted in further runs, because of the if condition, (such that the old value of previous runs remains in the assigned memory-slot)

One might argue what a global variable is, in Perl context it's normally used as synonym for package variables.

Actually I'm trying to avoid the term "global" and prefer saying "package" or "lexical"! (There are hacks to globally manipulate lexicals)

IMHO the only acceptable least misunderstandable use of the term "global" is with special vars like $_ which always belong to main:: without full qualification, no matter which package you're in.

$_=666;
package Foo;
print $_;      # -> 666

[download]

HTH! :)

Cheers Rolf

In reply to Re^4: A curious case of of my() (What is GLOBAL?) by LanX
in thread A curious case of of my() by fleetingflicker

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