| argument_type typedef | unary_function< _Pair, _Pair::first_type > | |
| operator()(_Pair &__x) const (defined in _Select1st) | _Select1st | [inline] |
| operator()(const _Pair &__x) const (defined in _Select1st) | _Select1st | [inline] |
| result_type typedef | unary_function< _Pair, _Pair::first_type > |
1.5.6