Re: Re: sort hash by value

To expand on ant9000's answer, his function will help in making a comparison tag. He's building a string which has all the numbers in fixed-width columns so that the string comparison operator will naturally order according to numerical fields. To use it to sort by those tags, you'd apply the schwartzian transform:

my @keys_sorted_by_converted_value =
       map { $_->[0] }
       sort { $a->[1] cmp $b->[1] }
       map { [ $_, fmt($hash{$_}) ] }
       keys %hash;
[download]

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Re: Re: Re: sort hash by value by ant9000 (Monk) on Jul 11, 2003 at 14:55 UTC
You're right: reading again my post, I find it quite cryptic myself... sorry. The idea is the following: `@sorted_keys=sort { fmt($hash{$a}->{oid}) <=> fmt($hash{$b}->{oid}) } keys %hash;` [download] where `fmt` is defined as above (with the correction in split below, sure!). You can also use `cmp` instead of `<=>`, if you wish.	[reply] [d/l] [select]