std::binder1st - Man Page

typedef _Operation::second_argument_type argument_type
argument_type is the type of the argument
typedef _Operation::result_type result_type
result_type is the return type

binder1st (const _Operation &__x, const typename _Operation::first_argument_type &__y)
_Operation::result_type operator() (const typename _Operation::second_argument_type &__x) const
_Operation::result_type operator() (typename _Operation::second_argument_type &__x) const

_Operation op
_Operation::first_argument_type value

class std::binder1st< _Operation >"One of the binder functors.

argument_type is the type of the argument

result_type is the return type