std::error_code

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std::error_code
Member functions error_code::error_code error_code::operator= error_code::assign error_code::clear error_code::value error_code::category error_code::default_error_condition error_code::message error_code::operator bool Non-member functions operator< operator== operator!= operator<< make_error_code Helper classes is_error_code_enum hash<std::error_code>

Defined in header <system_error>
class error_code;		(since C++11)

std::error_code is a platform-dependent error code. Each std::error_code object holds one integer value (the error code, originating from the operating system, or some low-level interface) and a pointer to an object of type std::error_category. Thus, the error code values may be reused between different categories.

Contents 1 Member functions 2 Non-member functions 3 Helper classes 4 See also

[edit] Member functions

(constructor)	constructs an error_code (public member function)
operator=	replaces the contents of an error_code (public member function)
assign	replaces the contents of an error_code (public member function)
clear	sets the error_code to value 0 in generic_category (public member function)
value	obtains the value of the error_code (public member function)
category	obtains the error_category for this error_code (public member function)
default_error_condition	obtains the error_condition for this error_code (public member function)
message	obtains the explanatory string for this error_code (public member function)
operator bool	checks if the value is non-zero (public member function)

[edit] Non-member functions

operator== operator!= operator<	compares two error_codes (function)
operator<<	outputs the value and the message to an output stream (function)
make_error_code (C++11)	creates an error code from an error_category (function)

[edit] Helper classes

is_error_code_enum (C++11)	identifies a class as an error_code enumeration (class template)
std::hash<std::error_code> (C++11)	hash support for std::error_code (class template specialization)

[edit] See also

error_condition (C++11)	holds a portable error code (class)
error_category (C++11)	base class for error categories (class)