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std::error_code:: assign

From cppreference.net
Utilities library
void assign ( int val, const error_category & cat ) noexcept ;
(since C++11)

Replaces the contents with error code value val and corresponding category cat .

Parameters

val - platform-dependent error code value to assign
cat - error category corresponding to val

Return value

(none)

See also

assigns another error code
(public member function)