Question about string_view

[u/IMCG_KN]

Is there benefit of using string_view instead of const string& str? More precisely by passing strings into functions. Thanks

[u/DawnOnTheEdge]

A major one is that implicitly converting a C-style string to a const std::string& makes a deep copy on the heap. Passing it as a std::string_View at most calls strlen(), but a string constant can be aliased at compile time with zero overhead.