in reply to Re: Collapsing a string to unique characters
in thread Collapsing a string to unique characters
Applying my same tricks, you can replace the @_=();say@_ initialization by @_=!say@_, which is two chars shorter,yielding 31 on Windows and 33 on Unix:
-nE@_[ord]=$_,for/./g;@_=!say@_
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