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Re: How to access outside variable

by lyklev (Pilgrim)
on Jan 21, 2011 at 12:11 UTC ( #883518=note: print w/replies, xml ) Need Help??

in reply to How to access outside variable

The solution to your problem is by making the outer scoped variable a package variable using our, and referring to it using the implicit main package. The nested variable is a local variable using my. The full routine then becomes

#!/usr/bin/perl use strict; use warnings; our $a = 10; { my $a = 11; print $a, "\n"; # prints the local variable print $main::a, "\n"; # prints the package variable }

That said, it is also a trick question during your interview, as you mentioned. Choosing $a or $b for a local variable is always bad, because they are used by sort which means they are somewhat special and can cause strange behaviour.

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