`std::any` (C++)

The std::any class in C++ (introduced in C++17) is a type-safe container for single values of any type.

std::any can hold any type, even types that were not known at the time the program was compiled.

#include <any>
#include <iostream>
#include <string>
 
int main() {
    std::any value = 10;  // Store an int
    value = std::string("Hello");  // Store a string
 
    try {
        std::cout << std::any_cast<std::string>(value) << std::endl;  // Retrieve the string
    } catch (const std::bad_any_cast& e) {
        std::cout << "Bad cast: " << e.what() << std::endl;
    }
 
    return 0;
}

Doesn’t this make it like python?

How does this work under the hood?

I think some sort of memory allocation of void* type, create a copy when the copy assignment operator is called, and copy it into memory.