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std::error_code::error_code

STD：错误[医]代码：：错误[医]代码

error_code((1)(since C++11)
error_code( int ec, const error_category& ecat (2)(since C++11)
template< class ErrorCodeEnum > error_code( ErrorCodeEnum e (3)(since C++11)

构造新的错误代码。

1%29构造具有默认值的错误代码。相当于error_code(0,std::system_category())...

2%29构造错误代码ec作为平台相关的错误代码和ecat作为相应的错误类别。

3%29从错误代码枚举构造错误代码。e相当于*this = make_error_code(e)只有在下列情况下，重载才会参与过载解决方案std::is_error_code_enum<ErrorCodeEnum>::value==true...

参数

ec-platform dependent error code to construct with
ecat-error category corresponding to ec
e-error code enum to construct with

例外

noexcept规格：

noexcept

另见

make_error_code(std::errc) (C++11)constructs an std::errc error code (function)
make_error_code(std::io_errc) (C++11)constructs an iostream error code (function)
make_error_code(std::future_errc) (C++11)constructs a future error code (function)

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