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Re^6: Inline substitution regex

by vitoco (Friar)
on Sep 29, 2009 at 18:20 UTC ( #798173=note: print w/replies, xml ) Need Help??

in reply to Re^5: Inline substitution regex
in thread Inline substitution regex

Wow, that was an unexpected answer... :-)

With post "I should've known better!" in mind, I was trying to understand if $_ is modified only in the scope of the substitution from the OP's attempt:

foreach (keys %{$ref_cookie}) { push(@{$self->{cookies}}, {$_=~s/^-//}, $ref_cookie->{$_}}); }

I didn't pay much attention on the context or what keys should be. I see your point and agree.

Now, if OP has both types of keys, with and without leading hashes:

-foo => 'food', bar => 'barl'

the code should be:

push @{$self->{cookies}}, /^-?(.*)/, $ref_cookie->{$_};

to get all four values in the array.

BTW, I'll have to practice more with push of undef in arrays...

Replies are listed 'Best First'.
Re^7: Inline substitution regex
by ikegami (Pope) on Sep 29, 2009 at 23:50 UTC

    I had only answered your first question. As for your second question, no, the hash creation operator ({}) does not localize $_. Curlies don't localize $_ when they're used as a bare block either. And neither does do. $_ is only implicitly localized by foreach loops (when no iterator variable is provided), map and grep.

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