cpp-smart-pointers

C++ smart pointers prevent memory leaks by binding dynamic object lifetimes to RAII scope, ensuring automatic cleanup. They provide clear ownership semantics to replace error-prone manual memory management and raw pointers.

Use weak_ptr to break circular dependencies when shared_ptr instances reference each other. Weak references observe objects without affecting reference counting or taking ownership, preventing permanent memory leaks in cross-referenced structures.

Use unique_ptr for exclusive ownership of dynamically allocated objects. It provides single-owner semantics and automatic cleanup, and you can safely move or convert ownership to shared_ptr when sharing becomes required.

Apply custom deleters to smart pointers to execute specialized cleanup logic during resource lifecycle control. This pattern extends RAII memory management beyond standard deallocation for advanced resource handling.

The enable_shared_from_this pattern allows an object to safely generate a shared_ptr to itself. It integrates with the reference counting mechanism to manage shared ownership without causing double-free errors.

Yes, you can convert unique_ptr to shared_ptr when shared ownership is required. Moving exclusive ownership transfers the resource lifecycle control into the reference-counted shared pointer system safely.