////////////////**** FILTER FUNCTION*****///////////////////
const MyNum = [1,2,3,4,5,6,7,8,9,10]
   
   
   
const  mynums = MyNum
                .map((num) => num  * 10)
                .map((num) => num  + 1)
                .filter((num) => num  >= 40)
                
console.log(mynums);
                
//////// reduce function ///////////////////////
                
const NUM = [1, 2, 3, 4];
const mytotal = NUM.reduce(function (acc, currval) {
    console.log(`acc: ${acc} and currval: ${currval}`);
    return acc + currval;
}, 0); // zero is the acc's initial value
console.log(mytotal);

const mytot = NUM.reduce((acc, curr) => acc+curr, 0 )
console.log(mytot);

const shoppingCart = [
    {
        itemName: "js course",
        price: 2999
    },
    {
        itemName: "py course",
        price: 999
    },
    {
        itemName: "mobile dev course",
        price: 5999
    },
    {
        itemName: "data science course",
        price: 12999
    },
]

const priceToPay = shoppingCart.reduce((acc, item) => acc + item.price, 0)

console.log(priceToPay);