range-test.cpp

#include <range/v3/all.hpp>
#include <vector>
#include <array>
#include <iostream>

using std::cout;
using std::endl;
using namespace ranges;

auto is_six = [](int i) -> bool { return i == 6; };
auto doub = [](int i) -> int { return 2 * i; };

int main() {
  std::vector<int> v { 6, 2, 3, 4, 5, 6 };
  auto c = count_if( v, is_six );
  cout << "count-sixes: " << c << endl;

  auto s = accumulate( v, 0 );
  cout << "sum-vetor: " << s << endl;

  auto e = find_if( view::ints(1) | view::transform(doub), is_six );
  cout << "find-six: " << *e.get_unsafe() << endl;
}