javascript - How to generate range of numbers from 0 to n in ES2015 only? - Stack Overflow

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Mon Feb 21 2022 17:48:42 GMT+0000 (Coordinated Universal Time)

Saved by @joel113 #javascript #typescript

const Range = function* (total = 0, step = 1, from = 0) {
  for (let i = 0; i < total; yield from + i++ * step) {}
};

Array.from(Range(5, -2, -10));
//=> [-10, -12, -14, -16, -18]

[...Range(5, -2, -10)]; // Five Elements With Step -2 From -10
//=> [-10, -12, -14, -16, -18]

// Also works with for..of loop
for (i of Range(5, -2, 10)) console.log(i);
// 10 8 6 4 2

// Lazy loaded way
const number0toInf = Range(Infinity);
number0toInf.next().value;
//=> 0
number0toInf.next().value;
//=> 1
// ...

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https://stackoverflow.com/questions/36947847/how-to-generate-range-of-numbers-from-0-to-n-in-es2015-only

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