#ifndef M_TGT_
# define M_TGT_ T_Self
#endif

template< ptrdiff_t Direction >
class T_Iterator_ final : public std::iterator<
			std::random_access_iterator_tag , Type >
{
    private:
	M_TGT_* array_;
	ptrdiff_t pos_;

    public:
	T_Iterator_( M_TGT_& array ,
			const ptrdiff_t pos ) noexcept;

	M_ITER_CONS_DEF( T_Iterator_ );
	M_ITER_CONS_COPY( T_Iterator_ );
	M_ITER_SWAP( T_Iterator_ );
	M_ITER_CMP_ALL( T_Iterator_ );
	M_ITER_DEREF_RANDOM( Type& , Type* );
	M_ITER_OPS_RANDOM( T_Iterator_ );

	bool valid( ) const noexcept;
	M_TGT_* target( ) const noexcept;
	ptrdiff_t pos( ) const noexcept;
};
using T_Iterator = T_Iterator_< 1 >;
using T_ReverseIterator = T_Iterator_< -1 >;

#undef M_TGT_