std::system_error::operator=
From cppreference.com
< cpp | error | system error
C++
Utilities library
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Diagnostics library
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std::system_error
Member functions | ||||
system_error::operator= | ||||
system_error& operator=
(
const system_error& other )
noexcept
;
|
(since C++11) | |
Assigns the contents with those of other. If *this and other both have dynamic type std::system_error
then
std::strcmp
(what(
), other.what
(
)
)
==
0
Parameters
other | - | another system_error object to assign with
|
Return value
*this
Example
Run this code
#include <cassert> #include <cstring> #include <iostream> #include <system_error> void print(const std::system_error& e) { std::cout << "code: [" << e.code() << "]\n" "message: [" << e.code().message() << "]\n" "what: [" << e.what() << "]\n\n"; } int main() { std::system_error e1(EDOM, std::generic_category(), "Error info #1"); print(e1); std::system_error e2(EIO, std::system_category(), "Error info #2"); print(e2); e1 = e2; assert(std::strcmp(e1.what(), e2.what()) == 0); print(e1); }
Possible output:
code: [generic:33] message: [Numerical argument out of domain] what: [Error info #1: Numerical argument out of domain] code: [system:5] message: [Input/output error] what: [Error info #2: Input/output error] code: [system:5] message: [Input/output error] what: [Error info #2: Input/output error]