On Wed, Feb 02, 2005 at 04:20:05PM +0200, Vladi Belperchinov-Shabanski wrote: > On Wed, 2 Feb 2005 12:33:35 +1100 (EST) > Andrew Savige <[EMAIL PROTECTED]> 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
Except under "use integer". A little known fact is that perl's bitops cast operands to unsigned integers without "use integer" and to signed integers with "use integer".
