std::minus
Min standard notice:
Header: <functional>
Function object for performing subtraction. Effectively calls operator- on two instances of type T.
# Declarations
template< class T >
struct minus;
(until C++14)
template< class T = void >
struct minus;
(since C++14)
# Parameters
lhs, rhs: values to subtract from one another
# Return value
The result of lhs - rhs.