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c++.stlsoft - STLSoft & GNU g++

reply "Alex Vinokur" <alexvn connect.to> writes:
Is it worth working in GNU g++ with STLSoft?

Does STLSoft contain any things which are missing in GNU g++?

How to work in GNU g++ with STLSoft (for instance, in Cygwin)?

--
   Alex Vinokur
     mailto:alexvn connect.to
     http://mathforum.org/library/view/10978.html
Mar 18 2004
parent reply "Matthew" <matthew stlsoft.org> writes:
 Is it worth working in GNU g++ with STLSoft?


Sure. I use GCC (g++) all the time with various STLSoft code.


 Does STLSoft contain any things which are missing in GNU g++?


STLSoft is a suite of library extensions, in the manner of STL. g++ is a
compiler. I don't really understand your question. :(


 How to work in GNU g++ with STLSoft (for instance, in Cygwin)?


I've never worked with Cygwin, as I use MinGW, but you simply #include the
components you need and program away ...

Hope that helps


-- 
Matthew Wilson

Synesis Software; Custom Software Solutions
    (www.synesis.com.au)
Contributing editor, C/C++ Users Journal
    (www.synesis.com.au/articles.html#columns)
STLSoft moderator
    (http://www.stlsoft.org)
Mar 18 2004
parent reply "Alex Vinokur" <alexvn connect.to> writes:
"Matthew" <matthew stlsoft.org> wrote in message
news:c3c3dd$bt$1 digitaldaemon.com...
[snip]

 Does STLSoft contain any things which are missing in GNU g++?


 STLSoft is a suite of library extensions, in the manner of STL. g++ is a
 compiler. I don't really understand your question. :(


I meant the following point.
GNU g++ contains STL.
When/why does one need to use not only STL but another library in the manner of
STL?  Any sample?

[snip]

Next question.

Here are some results of comparative performance measurement:
1. Computing very long Fibonacci numbers
http://article.gmane.org/gmane.comp.lang.c++.perfometer/31/

2. C/C++ Program Perfometer
http://alexvn.freeservers.com/s1/perfo/tests/pftests.htm

Could STLSoft (for instance, with g++) improve the performance.

--
   Alex Vinokur
     mailto:alexvn connect.to
     http://mathforum.org/library/view/10978.html
Mar 18 2004
parent "Matthew" <matthew.hat stlsoft.dot.org> writes:
Alex

Sorry for the delayed response. Comments inline ...

"Alex Vinokur" <alexvn connect.to> wrote in message
news:c3c6iv$5p2$1 digitaldaemon.com...

 "Matthew" <matthew stlsoft.org> wrote in message


news:c3c3dd$bt$1 digitaldaemon.com...

 [snip]

 Does STLSoft contain any things which are missing in GNU g++?


 STLSoft is a suite of library extensions, in the manner of STL. g++ is a
 compiler. I don't really understand your question. :(


 I meant the following point.
 GNU g++ contains STL.
 When/why does one need to use not only STL but another library in the manner of


STL?  Any sample?

STL is not primarily about replacing components of the standard library -
although there are some that do so, such as basic_simple_string<> and myriad
allocators - but rather about providing STL-like interface layers over disparate
operating system and technology-specific APIs.

For example, UNIXTL provides a readdir_sequence, which presents an STL Input
Iterator access over the UNIX opendir()/readdir() API. Similarly, WinSTL
provides
reg_key_sequence and reg_value_sequence classes, which provide STL Bidirectional
Iterator access over Win32 registry keys and values.

Hope that answers the question.


 [snip]

 Next question.

 Here are some results of comparative performance measurement:
 1. Computing very long Fibonacci numbers
 http://article.gmane.org/gmane.comp.lang.c++.perfometer/31/

 2. C/C++ Program Perfometer
 http://alexvn.freeservers.com/s1/perfo/tests/pftests.htm

 Could STLSoft (for instance, with g++) improve the performance.


It depends on the bottlenecks.

Some parts of STLSoft are aimed specifically at performance. For examples:
    - auto_buffer provides highly efficient variable-sized automatic buffers
    - fixed_array provides a very efficient multidimensional array
    - fast_string_concatenation provides a very fast, non-intrusive, mechanism
for improving string concatenation. (This is described in an article in next
month's - June 2004 - CUJ; http://www.cuj.com)
    - and several others.

I'm afraid I do not have the bandwidth to be able to examine specific code to
determine recommendations, but you're welcome to experiment and post
results/observations. You might also check out the articles listed in
http://synesis.com.au/articles.html, many of which are to do with performance +
STLSoft


 --
    Alex Vinokur
      mailto:alexvn connect.to
      http://mathforum.org/library/view/10978.html
Apr 25 2004