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std::ranges::greater

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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).

Contents

[edit] Nested types

Nested type Definition
is_transparent unspecified

[edit] 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 >
constexpr bool operator()( T&& t, U&& u ) const;

Equivalent to return ranges::less{}(std::forward<U>(u), std::forward<T>(t));.

This overload participates in overload resolution only if std::totally_ordered_with<T, U> is satisfied.

[edit] Notes

Unlike std::greater, std::ranges::greater requires all six comparison operators <, <=, >, >=, == and != to be valid (via the totally_ordered_with constraint) and is entirely defined in terms of std::ranges::less.

[edit] Example

[edit] Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR Applied to Behavior as published Correct behavior
LWG 3530 C++20 syntactic checks were relaxed while comparing pointers only semantic requirements are relaxed

[edit] See also

function object implementing x > y
(class template) [edit]