Re^3: Variable as name of array

Yes, you could do that but a Perl-style loop (see Foreach Loops) might be more idiomatic than a C-style one (For Loops). In fact, for and foreach are synonymous and can both be used interchangeably for either style of loop.

$ perl -Mstrict -Mwarnings -MData::Dumper -E '
> my @names = qw{ A B C D };
> my %order;
> foreach my $name ( @names )
> {
>     $order{ $name } = $name;
> }
> print Data::Dumper->Dumpxs( [ \ %order ], [ qw{ *order } ] );'
%order = (
           'A' => 'A',
           'D' => 'D',
           'C' => 'C',
           'B' => 'B'
         );
$
[download]

Another way to construct the hash would be to use a map instead of the foreach.

$ perl -Mstrict -Mwarnings -MData::Dumper -E '
> my @names = qw{ A B C D };
> my %order = map { $_ => $_ } @names;
> print Data::Dumper->Dumpxs( [ \ %order ], [ qw{ *order } ] );'
%order = (
           'A' => 'A',
           'D' => 'D',
           'C' => 'C',
           'B' => 'B'
         );
$
[download]

I hope this is helpful.

Cheers,

JohnGG

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Re^4: Variable as name of array by choroba (Cardinal) on Nov 01, 2012 at 22:56 UTC
Or even, horrors, a slice: `use Data::Dumper; my @names = qw/ A B C D /; my %order; @order{ @names } = @names; print Dumper \%order; __END__ Prints: $VAR1 = { 'A' => 'A', 'D' => 'D', 'C' => 'C', 'B' => 'B' };` [download] لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ	[reply] [d/l]