C++ operator overloading.

cpp_operator_overloading.cpp

#include <string>
#include <iostream>

struct Test {
    std::string word;
    Test&       operator()() { return *this; }
    std::string operator()(float f) { return word; }
    Test&       operator[](std::string w) {
        word.append(w);
        return *this;
    }
};

int main() {
    Test test;
    std::cout << test()["3"]()["34"]()["34534"]()["23"](3.4) << "\n";
}