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Re^5: Problem with -d inside find sub

by Anonymous Monk
on Apr 28, 2012 at 11:33 UTC ( #967800=note: print w/ replies, xml ) Need Help??


in reply to Re^4: Problem with -d inside find sub
in thread Problem with -d inside find sub

The problem is with local and lexical $_
Example:

use 5.010; sub my_sub (&) { my $code = shift; local $_ = '1234'; $code->(); } my_sub { say }; given ("test") { when ("test") { my_sub { say }; } }
Output:
1234 test
Why?
Because my $_ (lexical - from the given/when blocks ($_ = 'test')) has a higher priority (aka is in the block where you are) than the local $_ (local - from the my_sub ($_ = '1234')

How to fix this?
use 5.010; sub my_sub (&) { my $code = shift; local $_ = '1234'; $code->(); } my_sub { say }; sub my_sub2 { my_sub { say }; } given ("test") { when ("test") { my_sub2(); } }


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