std::error_category::operator==,!=,<,<=>

Since C++11

Compares to another error category.

# Declarations

bool operator==( const error_category& rhs ) const noexcept;

(since C++11)

bool operator!=( const error_category& rhs ) const noexcept;

(since C++11) (until C++20)

bool operator<( const error_category& rhs ) const noexcept;

(since C++11) (until C++20)

std::strong_ordering operator<=>( const error_category& rhs ) const noexcept;

(since C++20)

# Parameters