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Re^2: The weirdest problem with undef

by blazar (Canon)
on Jun 28, 2005 at 10:18 UTC ( #470559=note: print w/ replies, xml ) Need Help??


in reply to Re: The weirdest problem with undef
in thread The weirdest problem with undef

In this case your best bet would be to declare my (@array1, @array2) before the for loop if you want them to be available to your subroutines.

[SNIP]

This clearly tells me that the subroutine is looking for global variables. Declaring them as my inside a loop doesn't create global variables. So moving them to the top, like this, works fine:

OTOH this suggestion, in this form may contribute to suggest the OP to declare all of his own variables at the top of his scripts, which is indeed a bad habit many newbies have, and goes against proper scoping of variables.

I do use stuff like

{ my $var; sub bus { $var++; } }
myself, occasionally. But not as an alternative to parameter passing...


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