swap (a, b) suggestion

[D. Hugh Redelmeier]

[I'm replying to a reconstruction of the original message; sorry if I
botch it.]

On Sat, Jan 03, 1998 at 06:11:23PM -0500, Eric Buddington wrote:
| For integer values, the following works, and is significantly
| faster:
| template <class T>
| inline void swap(T& a, T& b) {
|   a ^= b;
|   b ^= a;
|   a ^= b;
|  }

If a and be are aliases, then this code won't work.  I don't actually know
the specs for swap -- are aliases legal?  I hope aliases are legal since
allowing degenerate cases simplifies programming.

Hugh Redelmeier
hugh@mimosa.com  voice: +1 416 482-8253