Compares arrays index by index with the provided element equality. A hole opposite a present element is equal only if that element is undefined (mirroring how a hole reads as undefined); the element equality is never invoked with a hole's undefined.
undefined
Compares arrays index by index with the provided element equality. A hole opposite a present element is equal only if that element is
undefined(mirroring how a hole reads asundefined); the element equality is never invoked with a hole'sundefined.