Modify string through string_view

No, you cannot modify the contents of a string through a std::string_view. std::string_view is designed to provide a read-only view of a string or a portion of a string.

It does not own the data, and it does not allow modification of the underlying string.

If you need to modify the string, you should work with a std::string or another modifiable string type. Here's an example to illustrate this:

1#include <iostream>
2#include <string>
3#include <string_view>
4
5void modifyString(std::string& str) {
6  str[0] = 'h';  
7}
8
9int main() {
10  std::string original{"Hello, world"};
11  std::string_view view{original};
12
13  // Trying to modify through string_view
14  // will result in an error:
15  // view[0] = 'h'; 
16
17  modifyString(original);  
18  std::cout << original;
19}

1hello, world

In this example, modifyString(original); successfully changes the first character of the std::string from H to h.

Attempting to modify the string through std::string_view would result in a compilation error because std::string_view does not support modification.