C++ std::string_view Examples

Can you explain what std::string_view is in C++?

Sure! std::string_view is a lightweight, non-owning view of a string. It allows you to refer to a string without copying it.

What are the benefits of using std::string_view over std::string?

The main benefits are performance and memory efficiency. std::string_view avoids unnecessary copies and can be used to refer to substrings.

Can you give me an example of how to use std::string_view?

Absolutely! Here's a simple example:

#include <iostream>
#include <string_view>

void printView(std::string_view sv) {
    std::cout << sv << std::endl;
}

int main() {
    std::string str = "Hello, World!";
    printView(str);
    return 0;
}

This function prints the string view without copying the string.

Are there any limitations to using std::string_view?

Yes, since std::string_view does not own the string data, it can lead to dangling references if the original string is destroyed.