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Re: "Secret" operators
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From:
Vladi Belperchinov-Shabanski
Date:
February 2, 2005 06:20
Subject:
Re: "Secret" operators
Message ID:
20050202162005.74fc628b.cade@biscom.net
On Wed, 2 Feb 2005 12:33:35 +1100 (EST)
Andrew Savige <ajsavige@yahoo.com.au> wrote:
> Jos_ Castro wrote:
> > Apart from the "secret eskimo greeting" and the "goatse operator",
> > can anyone tell me about other "secret" operators?
>
> Let's not forget the Ton Hospel "high-precedence decrement"
> operator ~- invented during a golf tournament (anyone remember
> which one?).
>
> IIRC, Ton's ~- invention allows you to eliminate the parens in:
>
> $y = ($x-1)*4;
>
> by using instead:
>
> $y = ~-$x*4;
>
> saving a whopping two strokes. This trick should work on any
> twos complement machine -- and I'm not aware of any perl running
> on any non twos complement machine.
will not work if $x < 0
>
> /-\
>
>
> Find local movie times and trailers on Yahoo! Movies.
> http://au.movies.yahoo.com
>
--
Vladi Belperchinov-Shabanski <cade@biscom.net> <cade@datamax.bg>
Personal home page at http://cade.datamax.bg/
DataMax SA http://www.datamax.bg
there is still one truth on which we can depend
we've started something we can never end
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