Is there an equivalent to the range-based `enumerate` loop from python in modern C++?

Question

Is there an equivalent to the range-based enumerate loop from python in C++? I would imagine something like this.

enumerateLoop (auto counter, a         


        

Answer 1

Here's a macro-based solution that probably beats most others on simplicity, compile time, and code generation quality:

#include 

#define fori(i, ...) if(size_t i = -1) for(__VA_ARGS__) if(i++, true)

int main() {
    fori(i, auto const & x : {"hello", "world", "!"}) {
        std::cout << i << " " << x << std::endl;
    }
}

Result:

$ g++ -o enumerate enumerate.cpp -std=c++11 && ./enumerate 
0 hello
1 world
2 !