const arraySatu = [1, 2, 3, 4];
const arrayDua = [5, 6, 7, 8];
const arrayTiga = [9, 10, 11, 12];
const arrayEmpat = [13, 14, 15, 16];
//array concat
const allArray = arraySatu.concat(arrayDua).concat(arrayTiga).concat(arrayEmpat);
console.log(allArray);
//array spread
const all = [...arraySatu, ...arrayDua, ...arrayTiga, ...arrayEmpat];
console.log(all);
/**
* benchmarking
* https://jsperf.com/array-concat-vs-array-push-vs-array-spread/1
**/
// berdasarkan benchmarking, array concat merupakan cara yang paling cepat dan efisien
const objectBebas = {
aspal: 'hitam',
roket: 'meluncur',
joker: 'villain',
unta: 'arab',
ninja: 'hatori'
}
const {a,r,j,u,n} = objectBebas
console.log(a)
