What is a weak_ptr in C++?
An example of an AI chatbot conversation about weak_ptr in C++ and its usage.
Can you explain what a weak_ptr is in C++?
Sure! A weak_ptr is a smart pointer in C++ that holds a non-owning reference to an object managed by a shared_ptr.
How does it differ from shared_ptr?
While shared_ptr manages the lifetime of an object through reference counting, weak_ptr does not affect the reference count.
When should I use weak_ptr?
You should use weak_ptr to prevent circular references that can lead to memory leaks when using shared_ptr.
Can you give me an example of using weak_ptr?
Certainly! If you have two objects that reference each other, using weak_ptr for one of them can help avoid a memory leak.
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