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