Re: Stupid Hash Tricks

[Paul Johnson]

On Fri, Apr 20, 2001 at 09:29:04AM -0400, Nutter, Mark wrote:
>    bash$ perl -e '
>    > @ary = ('a', 'b', 'c', 'b', 'a');
>    > %hsh = (); # empty hash
>    >
>    > foreach $item (@ary)
>    > {
>    > $hsh{$item} = 1;
>    > }
>    >
>    > @ary = keys %hsh;
>    >
>    > print (join "\n", @ary);'
>    a
>    b
>    c

But don't go relying on the ordering of the array.  Hashes don't
preserve order.  If you need an ordering, impose it.  eg

  print join "\n", sort @ary;

-- 
Paul Johnson - [EMAIL PROTECTED]
http://www.pjcj.net