I am having a little trouble in C++ with a struct that shall contain a unique_ptr. A part of the struct is
struct test { std::vector <std::unique_ptr<function>> allFunctions; } where
function is another struct. I always get C2280 attempting to reference a deleted function
As you might suspect I am quite new to C++ and have not much experience. And i HAVE TO use an unique_ptr, since this is part of an exercise.
Thank you already for your help! :)
The error is in the code that uses test, i.e. the code that you didn't show.
std::unique_ptr is by definition not copyable (it's unique!). That makes your whole structure not copyable.
If you attempt to copy test somewhere, the compiler will tell you that there is no std::unique_ptr::operator =, which is needed for copying.
For example:
test x; test y = x; // Copying. Error C2280 Or
void someFunction(test x) {} int main() { test x; someFunction(x); // Copying. Error C2280 } Error C2280 'std::unique_ptr<function,std::default_delete<_Ty>> &std::unique_ptr<_Ty,std::default_delete<_Ty>>::operator =(const std::unique_ptr<_Ty,std::default_delete<_Ty>> &)': attempting to reference a deleted function
The solution is to avoid copying test. You can achieve that by passing it by reference.
void someFunction(test& x) {} int main() { test x; someFunction(x); // OK } 
