Re: [FWP] Copying hashes

[Jeff Pinyan <jeffp@crusoe.net>]

On Jan 30, Uri Guttman said:

>  AL>     $self->{keys %$r} = $self->{values %$r};
                               ^^^^^^^^^^^^^^^^^^^

I think he meant ``values %$r''.

>$self->{keys %$r} is a scalar expression with a list key. this will be
>converted into the perl4 style multidimensional array by joining the
>list elements with $; and using that as the single key to the anon hash.

No, that conversion only takes place with a literal list inside the
braces.

  $hash{keys %foo} = values %foo;  # scalar keys(), scalar values()

>http://www.sysarch.com/perl/tutorials/hash_slices.txt

*peruse*

-- 

  MIDN 4/C PINYAN, USNR, NROTCURPI     http://www.pobox.com/~japhy/
  jeff pinyan: japhy@pobox.com     perl stuff: japhy+perl@pobox.com
  CPAN ID: PINYAN  http://www.perl.com/CPAN/authors/id/P/PI/PINYAN/
  PerlMonth - An Online Perl Magazine     http://www.perlmonth.com/


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