[TS] Polymorphism 다형성

in 그리스

poly : many, several, much, multi

morpho- : form(형태), structure(구조), 모양

poly + morphos = many different structures.shapes.forms

 

 

before

type SuperPrint = {
	(arr: number[]): void
	(arr: boolean[]): void
	(arr: string[]): void
	(arr: number|boolean)[]): void
}

const superPrint: SuperPrint = (arr) => {
	arr.forEach(i => console.log(i))
}

superPrint([1, 2, 3, 4])
superPrint([true, false, true])
superPrint(['a', 'b', 'c'])
superPrint([1, 2, true, false])