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beizhedenglong/stream.js

Last active July 18, 2019 06:45
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stream.js
const streamMaker = (f) => {
const aux = x => [f(x), () => aux(x + 1)]
return () => aux(0)
}
const ones2 = streamMaker(x => x + 100)
const numberUntil = (s, predict) => {
const aux = (s, ans) => {
const [result, th] = s()
if (predict(result)) {
return ans
}
return aux(th, ans + 1)
}
return aux(s, 1)
}
console.log(numberUntil(ones2, x => x === 200))
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