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

> 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)

"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

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
>
>
>
>
>
>