yishangru / CPPHeartAttack

Useful note when programming in CPP

Useful Note When Programming In CPP

General Advice

1. Use pointer is always better. Fxxk reference!

Copy Constructor Issue

Issue with std::move

Unique Pointer with Container (Vector, Map ...)

unique pointer can only be copied by std::move(). When wrap class in unique pointer and container, the copy of container will try to call const class&. However, Unique Pointer only support const class&&. Thus, it is proper to delete all possible const class& copy constructor, including

1. class(const class&) = delete;
2. class& operator=(const class&) = delete;

And only leave the move copy constructor (class(const class&&)) to make it consistency with unique pointer usage.

Ref: https://stackoverflow.com/questions/21943569/deleted-function-unique-ptr