What are the best practices for using std::optional in C++14?

What are the best practices for using std::optional in C++14?

When using std::optional in C++14, it's best to use it for cases where a value may or may not be present, avoiding raw pointers.

Can you give an example of when to use std::optional?

Sure! Use std::optional when a function might not return a value, like searching for an item in a collection.

Are there any performance considerations I should be aware of?

Yes, std::optional has a small overhead compared to using a raw type, but it improves code clarity and safety.

What about using std::optional with move semantics?

std::optional works well with move semantics, allowing you to efficiently transfer ownership of the contained value.

Is it safe to use std::optional in multithreaded environments?

Yes, std::optional is thread-safe as long as each thread accesses its own instance.