gistfile1.cpp

#include <iostream>

#include "../src/promise.h"

int main(int argc, char** argv)
{
  Promise<int> p;

  p.then<int>([](int const& i) {
    std::cout << "1 = " << i << std::endl;
    return i + 1;
  }).then<int>([](int const& i) {
    std::cout << "2 = " << i << std::endl;
    return i + 1;
  }).then<int>([](int const& i) {
    std::cout << "3 = " << i << std::endl;
    return i + 1;
  });

  p.fulfill(1);

  p.then<void>([](int const& i) {
    std::cout << "1 = " << i << std::endl;
    return i;
  }).then<void>([]() {
    std::cout << "void callback!" << std::endl;
  }).then<int>([]() {
    std::cout << "void callback 2!" << std::endl;
    return 2;
  }).then<int>([](int const& i) {
    std::cout << "2 = " << i << std::endl;
    return i + 1;
  });
}