Re^2: Golf for unique digits

This saves 2 strokes over yours:

perl -plE"@h{/./g}++;$_=keys%h"
[download]

And this saves 2 more over your version of tye's:

perl -lpE'$_=s/(.)(?!.*\1)//g'
[download]

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.

"Science is about questioning the status quo. Questioning authority".

In the absence of evidence, opinion is indistinguishable from prejudice.