std::ranges::greater
Defined in header <functional> | ||
|---|---|---|
struct greater; | (since C++20) |
Function object for performing comparisons. Deduces the parameter types of the function call operator from the arguments (but not the return type).
Member types
| Member type | Definition |
|---|---|
is_transparent | /* unspecified */ |
Member functions
| operator() | checks if the first argument is greater than the second (public member function) |
std::ranges::greater::operator()
template< class T, class U >
requires StrictTotallyOrderedWith<T, U> ||
/* std::declval<T>() < std::declval<U>() resolves to
a built-in operator comparing pointers */
constexpr bool operator()(T&& t, U&& u) const;
|
Compares t and u. Equivalent to return ranges::less{}(std::forward<U>(u), std::forward<T>(t));.
Notes
Unlike std::greater, std::ranges::greater requires all six comparison operators <, <=, >, >=, == and != to be valid (via the StrictTotallyOrderedWith constraint) and is entirely defined in terms of std::ranges::less. However, the implementation is free to use operator> directly, because those concepts require the results of the comparison operators to be consistent.
Example
See also
function object implementing x > y (class template) |
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