LLD - Design — Online Shopping Cart
Which of the following is the correct way to add a product to a cart in a typical class design?
Which of the following is the correct way to add a product to a cart in a typical class design?
easy📝 Conceptual Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Identify the class responsible for holding selected products
The Cart class holds selected products and their quantities before purchase.Step 2: Check method naming conventions
Adding a product to a cart is typically done by calling a method on the Cart object, like addProduct(product, quantity).Final Answer:
cart.addProduct(product, quantity) -> Option CQuick Check:
Adding product to cart = cart.addProduct() [OK]
Quick Trick: Add products via Cart methods, not Product or Order [OK]
Common Mistakes:
- Calling addToCart on Product class
- Using Order class to add products before purchase
- Confusing method names like createOrder in Cart
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