Function filter

filter<A>(pred: (a: A) => boolean): Optic<A, A, A, A>
Filters the value only if satisfies pred.
Type Parameters
- A
Parameters
- pred: (a: A) => boolean
  Condition to filter.
Returns Optic<A, A, A, A>
The computation to filter the data.
- Defined in src/optical/prism.ts:72