LLD - Design — Food Delivery System
Which of the following is the correct way to add a new item to the Menu class in a typical object-oriented design?
Which of the following is the correct way to add a new item to the Menu class in a typical object-oriented design?
easy📝 Conceptual Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Identify instance method usage
Adding an item to a Menu instance uses the instance method, so calling menu.addItem(...) is correct.Step 2: Eliminate incorrect syntax
Menu.add(...) suggests a static method which is unlikely; insertItem is not standard; addItem(menu, ...) is procedural, not OOP style.Final Answer:
menu.addItem('Pizza', 12.99) -> Option AQuick Check:
Instance method call = menu.addItem(...) [OK]
Quick Trick: Use instance.method() to add items, not static or procedural calls [OK]
Common Mistakes:
- Using static method call instead of instance method
- Confusing method names
- Calling functions outside class context
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