in reply to Golf for unique digits

choroba's method with ampersands and removing variable 
perl -E'2213=~/$_/&&$c++for 0..9;say$c'

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Re^2: Golf for unique digits
by trizen (Hermit) on Jan 09, 2013 at 18:28 UTC
    Even shorter: perl -E'say~~grep+2013=~$_,0..9'
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