Sean Kelly wrote:
On Jan 21, 2010, at 9:58 AM, Andrei Alexandrescu wrote:
Sean Kelly wrote:
Yeah, I was mostly responding to your earlier comment that casting didn't work
for you. If you really wanted to cast it would be to ptrdiff_t anyway.
I agree that there's a more fundamental problem though. Weren't we going to
make implicit narrowing conversions an error? I know it isn't in the spirit of
c, but c allows all sorts of horrible nonsense.
Implicit narrowing conversions are already disabled. But code involving cast is
explicit.
Sure, but if abs() took an int or long then it wouldn't compile without a cast,
right?
Unfortunately it does because int <-> uint and long <-> ulong
automatically. We couldn't disable that.
What we can do is to use "negative overloading" - accept unsigned types
but reject them via assert(false, "windows sucks");
Andrei
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