Re: Making a variable in a sub retain its value between calls

Note: this relies on undocumented behavior. The behavior it depends on may be changed without warning.

sub foo {
    my $x if 0;
    print "X is ", $x++, $/;
}

foo() for 3 .. 5;
----
X is 0
X is 1
X is 2
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Comment on Re: Making a variable in a sub retain its value between calls Download Code

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Re^2: Making a variable in a sub retain its value between calls by ikegami (Patriarch) on Apr 19, 2005 at 04:52 UTC
It is documented. It is documented as being undefined behaviour, which is even less reliable than undocumented.	[reply]