On Wed, Feb 07, 2001 at 05:54:14PM +0000, David Mitchell wrote:
> Well, many of the vtable methods are operator-ish rather than value-ish,
> presumably on the grounds of efficiency. A pure 'value' vtable wouldnt
> have add(), concatenate() etc. Whihc leads me back to: I'm not sure
> whether you are in favour of, or oppose, += etc being vtable methods.
I'm not either. They feel like they should be operators.
But I don't like the thought of going in and out of a lot of generic
routines for
$a = 3;
$a += 2;
when the integer scalar ought to know what the inside of another integer
scalar looks like, and that 2 + 3 doesn't overflow.
Hmm. += isn't another opcode
it's a special case of a = b + c where the PMCs for a and b are the same
thing. And I see no real reason why it can't be part of the + entry.
Nicholas Clark
