std::error_code::operator bool
From cppreference.com
< cpp | error | error code
C++
Utilities library
|
|
Diagnostics library
|
|
std::error_code
Member functions | ||||
Modifiers | ||||
Observers | ||||
error_code::operator bool | ||||
Non-member functions | ||||
(until C++20)
(until C++20)
(C++20)
|
||||
Helper classes | ||||
explicit operator bool
(
)
const
noexcept
;
|
(since C++11) | |
Checks if the error code value is valid, i.e. non-zero.
Parameters
(none)
Return value
false if value() == 0, true
Notes
Although this operator is often used as a convenient shorthand to check if any error was returned, as in if (ec) { /* handle error */ } , such use is not robust: some error codes, for example, HTTP status code 200