std::error_condition - cppreference.com (original) (raw)
std::error_condition holds a platform-independent value identifying an error condition. Like std::error_code, it is uniquely identified by an integer value and a std::error_category, but unlike std::error_code, the value is not platform-dependent.
A typical implementation holds one integer data member (the value) and a pointer to an std::error_category.
[edit] Member functions
| (constructor) | constructs an error_condition (public member function) [edit] |
|---|---|
| operator= | replaces the contents (public member function) [edit] |
| assign | replaces the contents (public member function) [edit] |
| clear | sets the error_condition to value 0 in generic_category (public member function) [edit] |
| value | obtains the value of the error_condition (public member function) [edit] |
| category | obtains the error_category for this error_condition (public member function) [edit] |
| message | obtains the explanatory string (public member function) [edit] |
| operator bool | checks if the value is non-zero (public member function) [edit] |
[edit] Non-member functions
[edit] Helper classes
[edit] Notes
The comparison between a std::error_code and a std::error_condition is defined by their error categories. Notably, an error condition of std::generic_category may compare equal to an error code of a specific category (e.g. std::system_category), if they represent the same kind of error.
A std::errc value can be compared to an error code via implicit conversion to std::error_condition.