std::greater<void>

Since C++14

Header: <functional>

std::greater is a specialization of std::greater with parameter and return type deduced.

# Declarations

template<>
class greater<void>;

(since C++14)

# Parameters

# Return value

std::forward(lhs) > std::forward(rhs).

# Example

#include <algorithm>
#include <cstdint>
#include <functional>
 
constexpr bool strictly_positive(int lhs)
{
    return std::greater<>()(lhs, 0);
}
 
int main()
{
    constexpr std::int64_t low = 0B11;
    constexpr std::uint16_t high = 0X11;
    std::greater<> greater{};
    static_assert(greater(high, low));
 
    constexpr static auto arr = {0, 1, 2, 3, 4, 5};
    static_assert(!std::all_of(arr.begin(), arr.end(), strictly_positive));
    static_assert(std::all_of(arr.begin() + 1, arr.end(), strictly_positive));
}

# Defect reports

DRApplied toBehavior as publishedCorrect behavior
LWG 2562C++98the pointer total order might be inconsistentguaranteed to be consistent