Method forEach

packages/effect/src/Optic.ts:841–841

* Focuses **all elements** of an array-like focus and optionally narrows * to a subset using an element-level optic. * Available only on Traversal (i.e. when `A` is * `ReadonlyArray `). Returns a new Traversal focused on the * selected elements. * * **Details** *

(this: Traversal<S, A>, f: (iso: Iso<A, A>) => Optional<A, B>)

   * @see `.modifyAll()` — apply a function to every focused element
   */
  forEach<S, A, B>(this: Traversal<S, A>, f: (iso: Iso<A, A>) => Optional<A, B>): Traversal<S, B>

  /**
   * Applies a function to **every** element focused by the traversal.