list_comprehension.js

// Array of products with their prices
const products = [
    { name: "Laptop", price: 999.99 },
    { name: "Mouse", price: 25.50 },
    { name: "Keyboard", price: 15.99 },
    { name: "USB Cable", price: 5.00 },
    { name: "Monitor", price: 199.99 },
    { name: "Headphones", price: 19.99 }
];

// Using filter and map to get names of products on sale, in uppercase
const onSaleProducts = products
    .filter(product => product.price < 20) // Filter products that are on sale
    .map(product => product.name.toUpperCase()); // Convert names to uppercase

console.log(onSaleProducts);

// output should be : ['USB CABLE', 'HEADPHONES']

list_comprehension.py

# List of products with their prices
products = [
    ("Laptop", 999.99),
    ("Mouse", 25.50),
    ("Keyboard", 15.99),
    ("USB Cable", 5.00),
    ("Monitor", 199.99),
    ("Headphones", 19.99)
]

# Using list comprehension to get names of products on sale, in uppercase
on_sale_products = [name.upper() for name, price in products if price < 20]

print(on_sale_products)

# output should be : ['USB CABLE', 'HEADPHONES']

#  Python and JavaScript can efficiently filter and transform data using list comprehensions or equivalent methods