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std::is_null_pointer
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std::is_union
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std::launder
std::length_error
std::less
std::less<void>
std::less_equal
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std::literals::chrono_literals::operator""h
std::literals::chrono_literals::operator""min
std::literals::chrono_literals::operator""ms
std::literals::chrono_literals::operator""ns
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std::error_code::message

STD：错误[医]代码：：信息

std::string message() const;​(since C++11)

返回与当前错误值和类别相对应的消息。

相当于category().message(value())...

参数

%280%29

返回值

对应于当前错误值和类别的错误消息。

例外

%280%29

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