Re: [boost] Re: move_ptr

From: Beman Dawes (bdawes_at_[hidden])
Date: 2004-01-21 15:03:23

At 10:41 AM 1/21/2004, Peter Dimov wrote:

 >Yes, shared_array can be extended that way. But my point was much 
simpler:
 >you can assert(i >= 0) in operator[](ptrdiff_t i) to catch s[-1], but you
 >can't if i is size_t, and s[-1] still works. :-)

IIRC, that was the rationale given by Bjarne and others for the desire to 
use of a signed type in similar cases. He was complaining about some 
library code that used size_t as an array index, precluding a simple 
assert(i >= 0).

--Beman