std::minus
< cpp | utility | functional
Defined in header <functional>
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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
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(since C++14) |
Member types
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(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; } |