DÅa Tuesday 28 September 2004 11:42 Gunnar Hjalmarsson napÃsal:
> Octavian Rasnita wrote:
> > I have a hash that have multiple sub hashes and I want to sort it
> > by a sub key.
> >
> > For example, I have:
> >
> > $comp{$code}{$year}{profit}.
> >
> > And I want to sort the $code values after the value of the "profit"
> > key.
> >
> > Is this possible directly, or I will need to create another hash
> > for doing this type of sort?
>
> You don't need another hash.
>
> perldoc -f sort
> perldoc -q "sort a hash"
>
> my @codes = sort {
> $comp{$a}{$year}{profit}
> <=>
> $comp{$b}{$year}{profit}
> } keys %comp;
my @codes = sort {$a <=> $b} keys %comp;
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