Hi monks,

Can anyone tell me if its possible to use sort to do a "double sort" of hash values?
Heres an example to demo what i want...
#!/usr/bin/perl

use strict;
use warnings;

my %bar = (
    # Name => [Age, Pets, Profession]
    'Grant'=>[29,4,'Doctor'],
    'Roberts'=>[32,1,'Priest'],
    'Johnson'=>[29,3,'MD'],
    'Harper'=>[23,2,'Student']
  );

# sort by age and print 
foreach my $name ( sort { $bar{$b}[0]<=>$bar{$a}[0] } keys %bar ) {
  my ($age,$pets,$prof) = @{$bar{$name}};
  print "Name: $name\nAge: $age\nPets: $pets\nProf: $prof\n";
} # end-foreach
exit;

[download]
This returns
Name: Roberts
Age: 32
Pets: 1
Prof: Priest
Name: Johnson
Age: 29
Pets: 3
Prof: MD
Name: Grant
Age: 29
Pets: 4
Prof: Doctor
Name: Harper
Age: 23
Pets: 2
Prof: Student
But I would like to sort by age first and then by number of pets second. The above code doesnt always return in the correct order for the pets part.

Does anyone know a way to achieve this?

Cheers,
Reagen

In reply to Double sort in hash values by rsiedl

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