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How do I print the values of a hash, sorted by the hash keys?

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Contributed by kwaping on Jul 21, 2006 at 19:38 UTC
Q&A  > sorting

Answer: How do I print the values of a hash, sorted by the hash keys?
contributed by Russ

There's more than one way to do it.

Here's the obvious way:

foreach my $key ( sort keys %data ) { print $data{$key}; }

Here it is, using a map within a single print call:

print map { $data{$_} } sort keys %data;

Here's a way using a hash slice:

foreach my $val ( @data{ sort keys %data } ) { print $val; }

Even the slice can be printed in a single print call:

print @data{ sort keys %data };

Of course, you'll want to set up the variables $, and $\ appropriately...

Answer: How do I print the values of a hash, sorted by the hash keys?
contributed by Tux

A rather obscure alternative could be

use Data::Dumper; $Data::Dumper::Sortkeys = 1; print Dumper \%hash;

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