highFilter = high ⇒ x ⇒ x≥high

Higher order function and closure.

let hightFilter = high ⇒ {
	return function(x){
		return x>=heigh
	}
}

//equalvient
let highFilter= high ⇒ x ⇒ x ≥ high;

//usage
let array = [2,4,6,7,10]
let gt10 = highFilter(10)
console.log(array.filter(gt10))