| libstdc++
    | 
| Public Types | |
| typedef integral_constant< _Tp, __v > | type | 
| typedef _Tp | value_type | 
| Public Member Functions | |
| constexpr | operator value_type () const | 
| constexpr value_type | operator() () const | 
| Static Public Attributes | |
| static constexpr _Tp | value | 
Partial specialization for tuples.