Re: How to stl library efficiently?

From:

=?UTF-8?B?RXJpayBXaWtzdHLDtm0=?= <Erik-wikstrom@telia.com>

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comp.lang.c++.moderated

Date:

Mon, 18 Aug 2008 07:58:34 CST

Message-ID:

<8a%pk.1740$U5.1116@newsb.telia.net>

On 2008-08-17 20:52, Peng Yu wrote:

On Aug 10, 11:03 am, Ulrich Eckhardt <dooms...@knuut.de> wrote:

Peng Yu wrote:

I came across some discussion on that improper usage stl library could
make program performance bad. Some tips are trivial, such as using the
appropriate algorithm, choosing the best data structure (say, vector
vs. list).

There is also deque as possible unordered container. BTW, can you supply a
URL of mentioned discussion?

I came across such webpage long time back. I can recall where it is.
Sorry about that.

I'm wondering whether are less obvious tricks to make stl based
program performance as good as the hard coded C program?

It's a very obvious trick but it still applies here: profile first, optimise
later.

Lastly: the STL was in large parts incorporated into the C++ stardardlibrary
but the overlap is not 100%. I'd generally target my code at the C++
standardlibrary, the STL itself is pretty much dead nowadays.

I always use the following website for the documentation when I use
STL.
http://www.sgi.com/tech/stl/

Where is the C++ Standard Library manual? I found this one
http://gcc.gnu.org/onlinedocs/libstdc++/. Is it appropriate?

What is the major difference between C++ Standard Library and STL? I
usually use GCC C++ compiler. It has the complete C++ Standard
Library, right?

STL is the name that was used before it became part of the C++ standard,
the C++ standard library contains the STL and some other stuff (like IO
capabilities etc.), so you can say that the STL is a subset of the
standard library.

The gcc standard library implementation is probably close to complete,
you can probably find detailed information about its conformance at the
gnu site.

--
Erik Wikstr??m

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