6 Dec
2010
6 Dec
'10
5:47 a.m.
On Sat, 4 Dec 2010, Sean Conner wrote:
Nope. !b will turn 0 to 1, and anything not 0 to 0.
!!-1 = !(!-1) = !(0) = 1
!!123 = !(!123) = !(0) = 1
!!0 = !(!0) = !(1) = 0
According to the following (and I was only referring to this!):
[...]
Of course, there's always "FT"[!!b]
This doesn't change much because !!123 may still be 123 instead of 1. It was thus said that the Great Philip Pemberton once
stated:
[...]
> However: the compiler would still be correct to
use the value 123
> instead of 1, thus that code may not work... So it's compiler
!!-1 = !(!-1) = !(0) = 123
!!123 = !(!123) = !(0) = 123
!!0 = !(!0) = !(123) = 0
Whether that's correct behaviour or not was not the question.
Christian