Function includes

includes<A>(equals: Equivalence<A>): (a: A) => Predicate<Tree<A>>

True if needle is found in the tree.

Will short-circuit and return immediately if the needle is found.

Type Parameters

A

Parameters

equals: Equivalence<A>

Returns (a: A) => Predicate<Tree<A>>

Example

import {includes, from, of} from 'effect-tree'
import {Number} from 'effect'

const tree = from(1, of(2), from(4, of(5)))

const hasNumber = includes(Number.Equivalence)

expect(hasNumber(3)(tree), 'not found').toBe(false)
expect(hasNumber(5)(tree), 'found').toBe(true)