string_view
Last Updated: December 6, 2025
7 min read
When working with strings in C++, you might find yourself wrestling with performance issues or unnecessary copy operations, especially when dealing with temporary strings or substrings. This is where std::string_view comes into play.
Introduced in C++17, std::string_view provides a lightweight, non-owning view into a string, allowing you to handle string data without the overhead of copying it.
Imagine you have a large string, and you want to pass a substring to a function. Using std::string_view, you can do this efficiently.
In this chapter, we’ll explore how std::string_view works, its benefits, and how to use it effectively in your C++ code.