How do I concatenate strings in C++17?

How do I concatenate strings in C++17?

In C++17, you can concatenate strings using the + operator or the std::string::append() method. For example:

std::string str1 = "Hello, ";
std::string str2 = "World!";
std::string result = str1 + str2;
// result is "Hello, World!"

Are there any new features in C++17 that help with string manipulation?

Yes, C++17 introduced std::string_view, which allows you to work with string data without copying it. This can improve performance when manipulating strings.

Can you show me an example of using std::string_view?

Sure! Here's a simple example:

#include <iostream>
#include <string_view>

void printString(std::string_view str) {
    std::cout << str << std::endl;
}

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

What about string formatting in C++17?

C++17 doesn't have built-in string formatting like Python's f-strings, but you can use std::ostringstream for formatting strings.