On 2 Mar 2009, at 21:32, Thorsten Ottosen wrote:
Christopher Jefferson skrev:
On 2 Mar 2009, at 20:12, Thorsten Ottosen wrote:
Frank Mori Hess skrev:
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Monday 02 March 2009, Thorsten Ottosen wrote:
Ok, but can you determine the size of the buffer in advance, so you can call reserve? Yes. If you're proposing adding the ability to grow an auto_buffer's capacity after it is constructed via a reserve() call, I could live with that.
No, I was actually advocating the that push_back should not grow.
But as pointed out in another part of this thread, we need both cases.
push_back() push_back_unchecked()
you will be able to use the latter, which is more efficient. You could make exactly the same argument about pushing back into a vector, why not have a push_back_unchecked that doesn't check if reallocation must occur. I did once experiment with this and got no measurable speed improvement.
So did I in a real-time ray-tracing application. The difference was a deal-breaker.
Interesting, I wouldn't have expected to get such a big difference. I certainly have no trouble with a push_back_unchecked(), but think push_back() should do what it does in vector and friends. Chris