std::minus
template< class T >
struct minus;
| | (until C++14) |
template< class T = void >
struct minus;
| | (since C++14) |
Function object for performing subtraction. Effectively calls operator- on two instances of type T.
Specializations
| The standard library provides a specialization of std::minus when T is not specified, which leaves the parameter types and return type to be deduced.
| | function object implementing x - y deducing argument and return types
(class template specialization) |
| (since C++14) |
Member types | Type | Definition |
result_type(deprecated in C++17) | T |
first_argument_type(deprecated in C++17) | T |
second_argument_type(deprecated in C++17) | T |
| (until C++20) |
Member functions
| operator() | returns the difference between two arguments
(public member function) |
std::minus::operator()
T operator()( const T& lhs, const T& rhs ) const;
| | (until C++14) |
constexpr T operator()( const T& lhs, const T& rhs ) const;
| | (since C++14) |
Returns the difference between lhs and rhs.
Parameters
| lhs, rhs | - | values to subtract from one another |
Return value
The result of lhs - rhs.
Exceptions
(none).
Possible implementation
constexpr T operator()(const T &lhs, const T &rhs) const
{
return lhs - rhs;
} |