How to add an array of values to a Set

Question

The old school way of adding all values of an array into the Set is:

// for the sake of this example imagine this set was created somewhere else 
// and I ca         


        

Answer 1

Just post that here for inspiration .. Creating a class that extends Set, and add a addRange method.

    class MegaSet extends Set {
    
      constructor(iterable) {
       super(iterable);
      }
      
      addRange(range) {
        for (var elem of range) {
          this.add(elem);
        }
      }
    }
    
    const array = [1,2,3,5,5,6];
    let mySet = new MegaSet([1,2,3,4]);
    
    mySet.addRange(array);
    console.log([...mySet]);