23 Dec
2004
23 Dec
'04
6:16 p.m.
Larry Evans wrote:
On 12/13/2004 06:20 PM, Joel wrote: [snip]
Whenever I have some more free time (too much to chew), I am writing some docs for fusion. A part of it will be dedicated to a rationale which shall attempt to explain why a flat structure is generally optimal. I did have some tests.
Searching past posts containing tuple showed:
http://lists.boost.org/MailArchives/boost/msg23983.php
which claims inheritance causes extra padding; hence, this is one advantage of flat vs. inherited structure.
Another is that (unless you use nonstandard language extensions) only flat structures allow O(1) random access. -- Dave Abrahams Boost Consulting http://www.boost-consulting.com