On 03/07/2012 07:51 PM, Ellery Newcomer wrote:
On 03/07/2012 12:23 AM, Ali Çehreli wrote:
There are probably hundreds of discussions about that over the years on
many different language newsgroups and forums. :) There is no clear
winner: Both sides of the arguments seem to have good points.
Ali
know any good ones off the top of your head?
Really randomly:
* Unsigned is better because some things are never negative: sizes,
indexes, etc.
* But we occasionally need to subtract one from the other. The following
is not safe unless we are sure that the left-hand side is greater:
size_t i = /* ... */;
size_t j = /* ... */;
foo(i - j); // Is this the difference or a very large number?
Another bug because of an unsigned type:
for (size_t i = /* ... */; i >= 0; --i) {
(Although I think most compilers catch that one.)
I searched for the following terms on comp.lang.c++.moderated and found
many interesting discussions:
size_t unsigned signed
I don't have a strong opinion myself.
Ali
