What are the lifetime issues with std::string_view in C++11?

What are the lifetime issues with std::string_view in C++11?

In C++11, std::string_view does not manage the lifetime of the string it points to. If the original string goes out of scope, the string_view becomes dangling.

Can you give an example of this issue?

Sure! If you create a std::string and then pass a std::string_view to a function, if the std::string is destroyed after the function call, the std::string_view will reference invalid memory.

How can I avoid these lifetime issues?

To avoid these issues, ensure that the std::string_view only references strings that are guaranteed to outlive it, or use std::string instead if ownership is needed.

Are there any best practices for using std::string_view?

Yes, always be cautious about the scope of the original string and prefer using std::string_view in contexts where the lifetime is well-managed.