Re: Fast STL data structure

From:
"Alf P. Steinbach" <alfps@start.no>
Newsgroups:
comp.lang.c++,comp.programming
Date:
Tue, 01 May 2007 22:59:52 +0200
Message-ID:
<59po2dF2ks75cU1@mid.individual.net>
* Juha Nieminen:

Alf P. Steinbach wrote:

Although off-topic in clc++m, this urban myth (an over-generalization of
a basic result) should not be propagated, so:


  It's not an urban myth.


It is. Note: you selected to snip the "it" referred to here. Please be
a bit more conscientious about quoting.

It's the upper limit for generic sorting when
only less-than comparison between elements is available. Any algorithm
faster than that (in the general case) needs something more than just
a less-than comparison.


Presumably you're here referring to a different "it" than above, namely
just the expression O(n log n).

Even so, your statement, as it is formulated, is incorrect or
meaningless, depending on how it's interpreted. My earlier posting in
this thread may provide some guidance, but I think I wrote what you
intended to write above. However, that is better discussed in e.g.
[comp.programming], if at all. Follow-ups set.

Cheers,

- Alf

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