Pair.h

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#ifndef MiscLib__PAIR_HEADER__
#define MiscLib__PAIR_HEADER__
#include <utility>
 
namespace MiscLib
{
    template< class FirstT, class SecondT >
    struct Pair
    {
        typedef FirstT FirstType;
        typedef SecondT SecondType;
        Pair() {}
        Pair(FirstType& f, SecondType& s)
            : first(f)
            , second(s)
        {}
        Pair(const std::pair< FirstType, SecondType >& p)
            : first(p.first)
            , second(p.second)
        {}
        Pair< FirstType, SecondType >& operator=(
            const std::pair< FirstType, SecondType >& p)
        {
            first = p.first;
            second = p.second;
        }
        FirstType first;
        SecondType second;
    };
 
    template< class FirstT >
    struct Pair< FirstT, FirstT >
    {
        typedef FirstT FirstType;
        typedef FirstType SecondType;
        FirstType first, second;
        Pair() {}
        Pair(FirstType& f, SecondType& s)
            : first(f)
            , second(s)
        {}
        Pair(std::pair< FirstType, SecondType >& p)
            : first(p.first)
            , second(p.second)
        {}
        Pair< FirstType, SecondType >& operator=(
            const std::pair< FirstType, SecondType >& p)
        {
            first = p.first;
            second = p.second;
        }
        operator FirstType* ()
        {
            return &first;
        }
        operator const FirstType* () const
        {
            return &first;
        }
    };
 
    template< class FirstT, class SecondT >
    Pair< FirstT, SecondT > MakePair(FirstT& first, SecondT& second)
    {
        return Pair< FirstT, SecondT >(first, second);
    }
};
 
#endif