1 2 | template< class T >
struct not_equal_to;
|
| | (until C++14) |
1 2 | template< class T = void >
struct not_equal_to;
|
| | (since C++14) |
Function object for performing comparisons. Unless specialised, invokes operator!= on type T.
Specializations
| The standard library provides a specialization of std::not_equal_to 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 | bool |
first_argument_type | T |
second_argument_type | T |
Member functions
| | checks if the arguments are not equal
(public member function) |
std::not_equal_to::operator()
1 | bool operator()( const T& lhs, const T& rhs ) const;
|
| | (until C++14) |
1 | constexpr bool operator()( const T& lhs, const T& rhs ) const;
|
| | (since C++14) |
Checks whether lhs is not equal to rhs.
Parameters
| lhs, rhs | - | values to compare |
Return value
true if lhs != rhs, false otherwise.
Exceptions
(none).
Possible implementation
1 2 3 4 | constexpr bool operator()(const T &lhs, const T &rhs) const
{
return lhs != rhs;
}
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