Re^2: 'my' with 'if 0' retains old value


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by bart (Canon)

on Apr 21, 2006 at 15:23 UTC ( [id://544928]=note: print w/replies, xml )

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my $v2; $v2 = -2 if 0;
[download]

Surely that won't do anything useful. I mean, it'll do the same as

my $v2;
[download]

Hence: no static variable, no value assigned.

Anyway:

my $v2 if 0;
[download]

will create a static variable. But IMO that's a coincidence of the implementation, I wouldn't count on it.

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Re^3: 'my' with 'if 0' retains old value by ikegami (Patriarch) on Apr 21, 2006 at 15:24 UTC
What if `0` is actually `DEBUG`? I don't presume to know what the real code is like.	[reply] [d/l] [select]
Re^4: 'my' with 'if 0' retains old value by diotalevi (Canon) on Apr 21, 2006 at 18:25 UTC
or what if `0` is actually `rand() > .5`? Then it's a static variable some of the time. ⠤⠤ ⠙⠊⠕⠞⠁⠇⠑⠧⠊	[reply] [d/l] [select]

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