Hello all, I'm having a bit of trouble sorting hashes numerically.

I create the hash entrys like this:
my %hash = ();
$hash{$recNo} {$i} {'first'} = $currS;
$hash{$recNo} {$i} {'last'} = $lastS;
$hash{$recNo} {$i} {'min'} = $minA;
$hash{$recNo} {$i} {'max'} = $minB;

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For each $recNo there can be a lot of $i - both $recNo and $i are numeric.

Everything is stored properly and I can easily access it, but I can't manage to sort $i numerically.

Here is how I (try to) do it:
my $rHash = \%hash;
for my $k1 = (sort keys %$rHash) #outer key, this works
{
  for my $k2 (sort ( {keys %{rHash->{$k1}{$a}} <=> keys %{$rHash->{$k1
+}{$b}} } keys %{$rHash->{$k1}}) )
  {
    #display miscellaneous
    print $k1 $k2;
  }
}

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$k1 is in the correct order, $k2 is not (rather random it seems). If I am doing an ascii sort for $k2, like this: 
for my $k2 (sort keys %{$rHash->{$k1}})

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it sorts correctly by ascii value, which doesnt help me much, but atleast indicates that it should be possible to sort it :)

Also, $k1 seem to be sorted correctly (numerically), why is this? I thought it sorted on ascii values unless asked to do otherwise with the <=> operator.

If someone could shed some light on this (particularly the sorting of $i) I would be very gratefull.

rgds,
Ole C.

In reply to sorting hashes by olecs

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