组合子

1. 奇怪的函数1

const connect = s => p =>
  connect(p(s))


const origin = 10


const task = req => req + 1


const output = res => {
  console.log(res)
  return res
}


connect(origin)(task)(task)(task)(task)(task)(output)

2. Y组合子实现匿名递归

找规律？

const sum = num => (num > 0 ? num + sum(num - 1) : num)


const sumR = sum => num => (num > 0 ? num + sum(sum)(num - 1) : num)


console.log((f => f(f))(sum => num => num > 0 ? num + sum(sum)(num - 1) : num)(3)) // 6


console.log((f => f(f))(sum => num => num > 0 ? num + ((f => f(f))(sum))(num - 1) : num)(3)) // 6


console.log(sumR(sumR)(3))