std::error_code::error_code - cppreference.com

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# std::error_code::error_code

From cppreference.com
< cpp‎ | error‎ | error code

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)

Constructs new error code.

1) Constructs error code with default value. Equivalent to error_code(0, std::system_category()).
2) Constructs error code with `ec` as the platform-dependent error code and `ecat` as the corresponding error category.
3) Constructs error code from an error code enum `e`. Equivalent to *this = std::make_error_code(e). The overload participates in overload resolutions only if std::is_error_code_enum<ErrorCodeEnum>::value == true.

### [edit] Parameters

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

### [edit] Exceptions

`noexcept` specification:
noexcept
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Category:

- unconditionally noexcept