Given the code below:
// This example demonstrates filtering and transforming a range on the
// fly with view adaptors.
#include <iostream>
#include <string>
#include <vector>
#include <range/v3/view/filter.hpp>
#include <range/v3/view/transform.hpp>
using std::cout;
int main()
{
std::vector<int> const vi{1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
using namespace ranges;
auto rng = vi | views::filter([](int i) { return i % 2 == 0; }) |
views::transform([](int i) { return std::to_string(i); });
// prints: [2,4,6,8,10]
cout << rng << '\n';
}
How do encapsulate the logic above into a specific function that returns a range I can pipe? I'm thinking a function that can take a range and output a range. I will need the type signature of a range and I'm not sure how to find out that type signature or write it out? Is there documentation on specifically how to do this and how do I find this out?
