RE: [Dev-C++] ioannis - namespaces

[Ioannis V. <no...@ho...>]

> -----Original Message-----
> From: dev...@li... 
> [mailto:dev...@li...] On Behalf 
> Of Ioannis Vranos
> Sent: Tuesday, June 18, 2002 2:09 PM
> To: dev...@li...
> Subject: RE: [Dev-C++] ioannis - namespaces
> 
> 
> > -----Original Message-----
> > From: dev...@li... 
> > [mailto:dev...@li...] On Behalf 
> > Of Daniel Glenfield
> > Sent: Tuesday, June 18, 2002 1:36 PM
> > To: dev...@li...
> > Subject: [Dev-C++] ioannis - namespaces
> > 
> > 
> > Ioannis, you've mentioned several times to always use 
> > namespaces as locally 
> > as possible. I was wondering why this is? What is the benefit 
> > of using them 
> > locally?
> > 
> > Daniel
> 
> 
> The namespace system was made to provide a system that 
> enables combining
> various libraries while protecting from name clashes.
> 
> So you can for example do:
> 
> #include <iostream>
  
  #include <vector>

> 
> // Daniel's version of vector
> #include <daniel.h>
> 
> 
> int main()
> {
>  using std::cout;

   using std::endl;

>  using daniel::vector;
> 
>  vector<int>array(50, 1);
> 
>  cout<<array[i]<<endl;
> }
> 
> 
> As god says in TC++PL, using global using directives is an efffort to
> defeat the namespace system, which has bad consequences in large
> projects. We must try to use more using std::something; than using
> namespace std; and as in small scope as possible.
> 
> In general myself, i use using std::something; for 2-3 facilities in a
> given function, and if there are more i place a using 
> namespace std; in
> that function scope.
> 
> 
> Ioannis
> 
> * Ioannis Vranos
> * Programming pages: http://www.noicys.cjb.net
> * Alternative URL: http://run.to/noicys
> 
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