Re: [Cog-book] Small golfing trick

* Philippe 'BooK' Bruhat ([email protected]) wrote:
> Hi,
> 
> I just discovered this, and do not know if it's commonly used in golf
> (it's been a long time since I last played): if you only need a single
> hash in your script, you can use the symbol table itself.
> 
> Compare the classic "remove duplicate lines" one-liner
> 
>     perl -ne'$s{$_}++||print' file
> 
> with
> 
>     perl -ne'$$_++||print' file

Whoo, nice :-) I'll add it to my notes, thanks :-)

> Three characters in one shot!
> 
> -- 
>  Philippe "BooK" Bruhat
> 
>  The learned man makes a mistake but once... but the truly stupid keep
>  practicing until they get it right.
>                                     (Moral from Groo The Wanderer #75 (Epic))
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--
Jose Alves de Castro <[email protected]>
      http://jose-castro.org/