From: dontmailme AT iname DOT com (Steamer)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: compare()
Date: Tue, 31 Oct 2000 13:45:17 GMT
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Rodeo Red wrote:

> > The compare() member functions for std::string in GCC's C++ library
> > are non-standard.  
> 
> What exactly does that mean ? 
> 
> I'd guess you are saying that compare() is a standard C++ library
> function, except GCC doesn't include all the standard variations, such
> as :
> int compare(size_type pos1, size_type n1, const basic_string& str)
> const; 
> but includes other versions, which arent standard, such as:
> int compare(const basic_string& str, size_type n1,)  

That's right.  The standard forms are these:

int compare(const basic_string& str) const;
int compare(size_type pos1, size_type n1, const basic_string& str) const;
int compare(size_type pos1, size_type n1, const basic_string& str, size_type pos2, size_type n2)
const;
int compare(const charT* s) const;
int compare(size_type pos1, size_type n1, const charT* s, size_type n2 = npos) const;

The current version of GCC's C++ library is missing some of these,
but has others with the arguments in a different order.  (I've no
idea why this is.)

> > The code that Stan Moore posted obviously won't work with most C++
> > compilers.
> 
> 
> Well its not so obvious to me.:)
> Let me see if I got this straight
> He's using this  form of compare:  
> if (( pos3 > 0 ) && (word.compare(ies, pos3)))  
> 
> which would match:
> int compare(const basic_string& str, size_type n1,)  
> 
> Which does not match any compare() function in standard c++ but is
> included with djgpp. 
> 
> Correct ? 

Correct.