• NN <nn-mail bk.ru> Oct 06 2007

NN <nn-mail bk.ru> writes:

Derek Parnell Wrote:

 On Thu, 04 Oct 2007 17:55:05 +0900, Bill Baxter wrote:
 
 I find it hard to believe that a compiler couldn't recognize that this 
 is a swap operation:
     tmp = a;
     a = b;
     b = tmp;
 
 If it's not harder than I think for some reason, then it's not really 
 needed in the language.


 Maybe it could, but that's not the point of a programming language. A
 programming language is for people, not computers, to read. It is whole lot
 easy to recognise "swap(a,b)" or even "a<->b" as a swapping operation than
 three lines of code.
 
 -- 
 Derek Parnell
 Melbourne, Australia
 skype: derek.j.parnell


IMO operator is the best. Otherwise anyone will reinvent the wheel again and
again.
See C++, there are much of swap functions, and much of nothrowing problem in
swap.