std::is_bind_expression - Man Page

typedef integral_constant< _Tp, __v > type
typedef _Tp value_type

constexpr operator value_type () const noexcept
constexpr value_type operator() () const noexcept

static constexpr _Tp value

struct std::is_bind_expression< _Tp >"Trait that identifies a bind expression.

Determines if the given type _Tp is a function object that should be treated as a subexpression when evaluating calls to function objects returned by std::bind.

C++11 [func.bind.isbind].

Since

C++11