Re: [Boost-users] ptr_vector sort usage

Subject: Re: [Boost-users] ptr_vector sort usage
From: Thorsten Ottosen (thorsten.ottosen_at_[hidden])
Date: 2010-08-05 12:13:18

archie14 skrev:
> Roman Perepelitsa <roman.perepelitsa <at> gmail.com> writes:
> 
>> class Compare
>   {
>> public:
>>     Compare (int i) : _i(i){}
>>     //this does not compile, but what's the proper way to define
>>     // function object for the sort method in ptr_vector?
>>     bool operator<(const A& v1, const A& v2)
>>     {
>>        return (v1.i > v2.i) &&(_i != 1);
>>     }
> ...
>   };
>> Try making your operator const:
>>   bool operator<(const A& v1, const A& v2) const
>>
>> Roman Perepelitsa.
> 
> No, it did not work. Complains that
> 
> binary 'operator <' has too many parameters

Indeed, when defining the comparison operator as a member you need to 
supply only one argument.

HTH

-Thorsten