Function elem_

packages/effect-app/src/Set.ts:318–328

(E: Equivalence.Equivalence<A>)

 * Test if a value is a member of a set
 */
export function elem_<A>(E: Equivalence.Equivalence<A>): (set: Set<A>, a: A) => boolean {
  return (set, a) => {
    const values = set.values()
    let e: Next<A>
    let found = false
    while (!found && !(e = values.next() as any).done) {
      found = E(a, e.value)
    }
    return found
  }
}

/**
 * Test if a value is a member of a set