Default Parameter
Domain: Programming Fundamentals
🎯 Motivation
Sometimes a parameter usually has the same value. Default parameters let callers skip it when they want the default.
📋 Concrete Example
def greet(name, greeting='Hello'): return greeting + ', ' + name. greet('Alice') uses Hello. greet('Alice', 'Hi') uses Hi.
🔗 Analogy
A restaurant menu - ‘comes with chips by default (default parameter). If you want salad instead, just say so (override the default).’