blog/iterables

[giscus[bot]]

blog/iterables

Iterable objects are a generalization of arrays. That’s a concept that allows us to make any object useable in a for..of loop.

http://localhost:3000/blog/iterables

[nisabmohd]

Test comment

[nisabmohd]

const range = {
  from: 1,
  to: 10,
};

range[Symbol.iterator] = function* () {
  let start = this.from;
  let end = this.to;
  while (start <= end) {
    yield start;
    start++;
  }
};

// still works the same for..of loop
for (let num of range) {
  console.log(num); // 1 2 3 4 5
}

// explicit iterator
const generator = range[Symbol.iterator]();
generator.next(); // { "value": 1, "done": false }