Function filter

Filters an iterable, only yielding items which match f.

filter([1, 2, 3, 4], e => e % 2 == 0);
returns [2, 4]

When using async iterables, f can be async as well.

Param: it

Param: f

filter<V>(it, f): AsyncGenerator<V>
Type Parameters
- V
Parameters
- it: AsyncIterable<V>
- f: ((v: V) => boolean | Promise<boolean>)
  - - (v): boolean | Promise<boolean>
    - Parameters
      v: V
      Returns boolean | Promise<boolean>
Returns AsyncGenerator<V>
filter<V>(it, f): Generator<V>
Type Parameters
- V
Parameters
- it: AsyncIterable<V>
- f: ((v: V) => boolean)
  - - (v): boolean
    - Parameters
      v: V
      Returns boolean
Returns Generator<V>