Default Parameters

Learning Python – Setting Default Parameters in Functions

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Learning Python - Setting Default Parameters in Functions

Default parameters are a powerful feature in Python functions that allow parameters to use predefined default values when no value is passed during the call. 1. Basic Syntax def function_name(parameter_name=default_value): # function body 2. Basic Usage Examples 1. Simple Default Parameter def greet(name, message="Hello"): print(f"{message}, {name}!") greet("Alice") # Output: Hello, Alice! greet("Bob", "Hi") # Output: … Read more

The ‘Shared List’ Trap in Python Class Attributes: Why Your Friend Became Everyone’s Friend?

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The 'Shared List' Trap in Python Class Attributes: Why Your Friend Became Everyone's Friend?

Today, I want to share a very common pitfall in Python—strange behavior when the default value of a class attribute is a mutable object (like a list). A seemingly simple example Let’s first look at a simple <span>Person</span> class definition: class Person: def __init__(self, name:str, frients:list=[]): self.name = name self.frients = frients def show_frients(self): print(f"{self.name}, … Read more

C++ Default Parameters vs Function Overloading: How to Choose?

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C++ Default Parameters vs Function Overloading: How to Choose?

Imagine you are ordering a cup of milk tea 🧋… “Boss, I want a cup of pearl milk tea!” “Do you want to adjust the sweetness and ice level?” “No, the default is fine!” This scene seems very familiar, right? In the programming world, C++ default parameters are like the “standard configuration” at a milk … Read more