Hmm, this doesn't beat tye's, but matches it, with a different technique. I wish I could find a way to shave a stroke using this method, but I think I've reached the dead end.

perl -lnE'@h{/./g}--;say~~keys%h'

[download]

And this adaptation of tye's shaves a stroke:

perl -lnE'say~~s/(.)(?!.*\1)//g'

[download]

Dave

In reply to Re: Golf for unique digits by davido
in thread Golf for unique digits by Cody Fendant

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