functional programing exercise 30% complated

Exercises/day-1/functional-programing-exercise.js

@@ -0,0 +1,59 @@
+const products = [
+  { product: 'banana', price: 3 },
+  { product: 'mango', price: 6 },
+  { product: 'potato', price: 2 },
+  { product: 'avocado', price: 8 },
+  { product: 'coffee', price: 10 },
+  { product: 'tea', price: 20 },
+]
+// // Print the price of each product using forEach
+// const product = (i,item)=> {
+//     products.forEach(item => {
+//         console.log(item.price)   
+//     });}
+//     product()
+
+// Print the product items as follows using forEach
+// The price of banana is 3 euros.
+// function prod (i,item) {
+//     products.forEach((item) => {
+//         console.log(`The price of ${item.product} is ${item.price} euros.`)
+//     })
+// }
+// prod()
+
+
+// Calculate the sum of all the prices using forEach
+
+// const sum = (product) => {
+//     let sum =0 
+//     products.forEach((product) => sum += product.price)
+//     console.log(sum)
+// }
+// sum()
+
+// Create an array of prices using map and store it in a variable prices
+// const price =products.map((product) => product.price)
+// console.log(price)
+
+// Filter products with prices
+const product = products.filter((item) => item.price)
+console.log(product)
+
+// Use method chaining to get the sum of the prices(map, filter, reduce)
+
+// Calculate the sum of all the prices using reduce only
+
+// Find the first product which doesn't have a price value
+
+// Find the index of the first product which does not have price value
+
+// Check if some products do not have a price value
+
+// Check if all the products have price value
+
+// Explain the difference between forEach, map, filter and reduce
+
+// Explain the difference between filter, find and findIndex
+
+// Explain the difference between some and every

Exercises/day-1/object-exercise-3.js

@@ -276,7 +276,7 @@ const products = [
 const userRatedProducts = (userId, products) => {
 
   const ratedProducts = products.filter((item) =>
-    item.ratings.find((rating) => rating.userId === userId)
+    item.ratings.some((rating) => rating.userId === userId)
   );
   return ratedProducts.map((item) => item.name);
 };