Am Tue, 18 Nov 2014 15:01:25 +0000 schrieb "Frank Like" <1150015...@qq.com>:
> > but now ,'int' is enough for use,not huge and not small,only > > enough. > > 'int' is easy to write,and most people are used to it. > > Most importantly easier to migrate code,if 'length''s return > >value type is 'int'. > > How about your idea? I get the idea of a broken record right now... Clearly size_t (which I tend to alias with ℕ in my code for brevity and coolness) can express more than 2^31-1 items, which is appropriate to reflect the increase in usable memory per application on 64-bit platforms. Yes, the 64-bit version of a program or library can handle larger data sets. Just like it was when people transitioned from 16-bit to 32-bit. I wont use `int` just because the technically correct thing is `size_t`, even it it is a little harder to type. Aside from the size factor, I personally prefer unsigned types for countable stuff like array lengths. Mixed arithmetics decay to unsinged anyways and you don't need checks like `assert(idx >= 0)`. It is a matter of taste though and others prefer languages with no unsigned types at all. -- Marco
