const set = new Set();
set.add("HongGilDong");
set.add("KimSanRang");
set.add("KangDongSu");
console.log("## Original Set: forEach")
set.forEach((value) => console.log(value));
console.log("## Original Set: for-of")
for(let item of set ) {
console.log(item);
}
set.delete("KangDongSu");
console.log("## After delete KangDongSu has: "+ set.has('KangDongSu'));
console.log("## new Array from Set")
let arr = Array.from(set);
console.log(arr);