Re: [Boost-users] String compare (instead of just less) that returns -1, 0 or 1

From: Pavol Droba (droba_at_[hidden])
Date: 2006-03-07 03:58:33

Hi,

On Sun, Mar 05, 2006 at 07:28:52PM +0100, Olaf van der Spek wrote:
> On 3/5/06, Sebastian Redl <sebastian.redl_at_[hidden]> wrote:
> > >Does Boost contain a (string) compare function that returns -1 if a <
> > >b, 0 if a == b and 1 if a > b?
> > >Doing both < and == sounds like a lot of extra work in for example
> > >sorting algorithms.
> > >
> > >
> > std::string itself has a compare() member function that does this. You
> > can use Boost.Bind to turn it into a function object.
> 
> But that's only case sensitive I guess.
> Does STL also have such a three-way function for ints (or a generic function)?
> 
> > In addition, the string algorithm library has such functions in the
> > development version, likely to be included in the next official release.
> 
> What's the name of those?
> 

There is case-insensitive lexicographical_compare included in string_algo lib.
but it has only bool return value, not integer as you require.

I could add something like that in future, but I will not be included in the following
release. 

Regards,
Pavol