How do I use the erase function in C++17 strings?

Can you explain how to use the erase function with strings in C++17?

Sure! In C++17, the erase function can be used to remove characters from a string. You can specify the position and the number of characters to erase.

What if I want to erase a substring instead of specific characters?

You can use the find method to locate the substring and then use erase with the position returned by find.

Can you show me a code example?

Absolutely! Here's a simple example:

std::string str = "Hello, World!";
size_t pos = str.find("World");
if (pos != std::string::npos) {
    str.erase(pos, 5);
}
// str is now "Hello, !"

What happens if the substring is not found?

If the substring is not found, find will return std::string::npos, and the erase function will not be called, leaving the original string unchanged.