fromIterator

Types

function fromIterator<GValue>(
  iterator: Iterator<GValue>,
): IObservable<GValue>

Definition

Creates an Observable from an Iterator. It emits the values sent by the iterator one by one.

caution

Use with caution: if you subscribe twice to the same Iterator, the emitted values probably won't be what you expect, due to concurrent calls on the .next function.

You should prefer to use fromIterable which generates a unique Iterator, or share the Observable.

Example

Simple Iterator emitting values from 0 to 9

const subscribe = fromIterator(
  (function * () {
    for (let i = 0; i < 10; i++) {
      yield i;
    }
  })()
);

subscribe((value: number) => {
  console.log(value);
});

Output:

0
1
...
9