conduit-examples.cpp

// Sum of the first 10 squares 
auto total = squares() >> take(10) >> sum();

// Jumps between the first 10 squares
auto jumps = squares() 
  >> scan(0, [](auto x, auto y) { return y - x; }) 
  >> take(10);

// The obligatory fibonacci
auto fibonacci = []() -> seq<int> {
  int a = 0; 
  int b = 1;
  
  while ( true ) {
    co_yield a;
    
    tie(a, b) = tuple{a + b, a};
  }
};

// Cumulative sum of 6 pseduo-random dice rolls
auto randoms = [](int seed) -> seq<double> {
  // pseudo-random
  std::mt19937 engine(seed);
  std::uniform_real_distribution<> dist;
  while (true) {
    co_yield dist(engine);
  }
};

auto rolls = randoms(0) 
  >> map([](auto x) { return ceil(x * 6); })
  >> scan(0, [](auto x, auto y) { return x + y; })
  >> take(6);