I want to sort the keys of a hash stored within an object. If I create a user defined cmp function for my sort, it only gets the values $a and $b. Within this cmp function how do I access the $self of the object?
# object
$self={
hash_ref=>{item1=>'value1',item2=>'value2'}
}
# cmp funtion
sub byvalue
{
#instead of
$a<=>$b;
#something like
$self->{hash_ref}->{$a}<=>$self->{hash_ref}->{$b};
#how do I access $self in this function?
}
# object's sort function
sub sort_hash_ref_keys_by_value
{
my $self=shift;
my @keys=sort byvalue keys(%{$self->{hash_ref}});
}
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