std::error_code
From cppreference.com
C++
Utilities library
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Diagnostics library
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std::error_code
| Member functions | ||||
| Modifiers | ||||
| Observers | ||||
| Non-member functions | ||||
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(until C++20)
(until C++20)
(C++20)
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| Helper classes | ||||
Defined in header <system_error>
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class error_code; |
(since C++11) | |
std::error_code represents a platform-dependent error code value. Each std::error_code object holds an error code value originating from the operating system or some low-level interface and a pointer to an object of type std::error_category
Member functions
| constructs an error code (public member function) |
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| assigns another error code (public member function) |
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| assigns another error code (public member function) |
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Modifiers | |
sets the error_code to value 0 in system_category (public member function) |
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Observers | |
obtains the value of the error_code (public member function) |
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| obtains the error_category for this error_code (public member function) |
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obtains the error_condition for this error_code (public member function) |
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obtains the explanatory string for this error_code (public member function) |
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| checks if the value is non-zero (public member function) |
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Non-member functions
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(removed in C++20)
(removed in C++20)
(C++20)
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compares two error_codes (function) |
| outputs the value and the category name to an output stream (function) |
Helper classes
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(C++11)
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identifies a class as an error_code enumeration (class template) |
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(C++11)
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hash support for std::error_code (class template specialization) |
See also
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(C++11)
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holds a portable error code (class) |
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(C++11)
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base class for error categories (class) |
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(C++11)
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creates error code value for errc enum e (function) |