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What is Monkey Patching and How to Implement it

In this text, I’ll introduce you to a captivating method in programming referred to as monkey patching.

Imagine you could have a instrument that may be reshaped to match completely different duties with out basically altering its core construction – that’s monkey patching for you.

I can even clarify how monkey patching has turn into a go-to methodology for builders in search of adaptability of their code. Instead of rewriting total sections of software program, monkey patching permits builders to make particular adjustments on the go.

I’ll stroll you thru its relevance in as we speak’s programming business, highlighting why builders depend on this method to clear up intricate issues and improve their software program’s capabilities.

Throughout our journey, I’ll present clear examples to decode the idea of monkey patching, making it accessible even you probably have not dived deeply into the world of programming.

So, buckle up as we dive into the training circulation of monkey patching and uncover its highly effective affect on code flexibility and adaptability.

Monkey Patching: An Overview


The idea that we’re about to talk about is broadly in style within the Python neighborhood. However, what makes it much more outstanding is its applicability in different programming languages as effectively.

At its core, monkey patching is a programming method that permits you to modify current code at runtime with out altering the supply code.

Developers make use of monkey patching to alter the conduct of a library or a module. It turns into handy everytime you want to add or modify a perform at runtime.

While these methods can considerably improve effectivity, they arrive with a downside: if not used correctly, the code could be difficult to perceive and preserve later.

Now, let’s delve deeper into the importance of monkey patching within the programming world. This will present a clearer understanding of the idea and its expansive applicability.

Importance of Monkey Patching in Modern Programming

Monkey patching holds vital relevance within the programming and internet growth business as a result of it provides agile and dynamic options to frequent challenges. Here are some key factors highlighting its relevance:

Rapid Bug Fixes: Enables rapid decision of crucial points, enhancing software program reliability and consumer expertise.

Open Source Collaboration: Facilitates alterations in open-source initiatives, respecting the integrity of the unique codebase.

Dynamic Frameworks: Adjusts functionalities in real-time, guaranteeing a seamless and responsive consumer expertise.

Customization: Tailor third-party libraries for particular enterprise wants with out ready for updates.

Efficiency in Development: Reduces growth time by enabling fast experimentation with new options or modifications.

The info above helps you make clear the idea of Monkey Patching and its significance. If not, let’s discover completely different monkey patching methods in numerous languages. This would possibly offer you a clearer perception into how to do Monkey Patching by yourself.

Monkey Patching in Python


In Python, you are able to do monkey patching by altering the category or module immediately. For instance, to add a brand new methodology to a category:

class MyClass:

    def my_method(self):

        return "Original method"

# Monkey patching: Adding a brand new methodology to the category

def new_method(self):

    return "Patched method"

MyClass.my_method = new_method

obj = MyClass()


# Output: "Patched method"

To do Monkey Patching in Python, I typically use two strategies. One is the monkey patching capabilities I discussed earlier than, and the opposite is utilizing decorators. Let’s have a look at an instance for a clearer understanding:

def custom_decorator(func):

    def wrapper(*args, **kwargs):

        return f"Patched method: {func(*args, **kwargs)}"

    return wrapper

# Applying the decorator to a way


def my_method():

    return "Hello"


# Output: "Patched method: Hello"

Monkey Patching in JavaScript


In JavaScript, you possibly can monkey patch objects and prototypes. Another approach is by utilizing Higher-Order Functions. These capabilities can change current capabilities. Here are some examples to assist you perceive:

#1. Objects & Prototype

// Original object

const myObject = {

    myMethod: perform() {

        return "Original method";



// Monkey patching: Modifying the prevailing methodology

myObject.myMethod = perform() {

    return "Patched method";



// Output: "Patched method"

#2. Higher-Order Functions

perform customWrapper(func) {

    return perform() {

        return `Patched methodology: ${func.apply(this, arguments)}`;



perform myFunction() {

    return "Hello";


myFunction = customWrapper(myFunction);


// Output: "Patched method: Hello" :

Monkey Patching in Ruby

In Ruby, you possibly can open lessons to add or change strategies. Let’s see how:

class MyClass

    def my_method

        "Original method"



# Monkey patching: Adding a brand new methodology to the category

class MyClass

    def new_method

        "Patched method"



obj =

places obj.my_method  # Output: "Original method"

places obj.new_method  # Output: "Patched method"

Exploring Other Programming Landscapes


Next, we’ll have a look at different programming languages to perceive the worth and significance of this idea. Please be cautious. I’ve offered the knowledge in bullet factors for fast understanding.

  • C#: In C#, you possibly can obtain monkey patching-like conduct utilizing extension strategies. Extension strategies enable you to add new strategies to current sorts with out modifying them.
  • Swift: In Swift, you should use extensions to add new strategies or computed properties to current sorts.
  • PHP: In PHP, you should use traits to obtain monkey patching-like conduct. Traits are related to lessons however supposed to group performance in a fine-grained and constant approach.
  • Scala: In Scala, you should use implicit lessons to add new strategies to current lessons with out modifying them immediately.

Unfortunately, In Go (or Golang), monkey patching is in a roundabout way supported as a result of Go doesn’t have the flexibility to modify current strategies or lessons at runtime. Go’s kind system is static and doesn’t enable modifications to current sorts. However, there are different methods you should use to obtain related outcomes, though they aren’t precisely monkey patching. 

Final Words

Monkey patching is a dynamic programming method that gives adaptability throughout a number of languages. From Python’s direct class modifications to JavaScript’s changes with Higher-Order Functions, its versatility is evident. 

Other languages, like Ruby, Swift, and C#, every have their very own approaches, showcasing the worldwide applicability of this methodology. However, it’s important to apply monkey patching judiciously to preserve code readability. As all the time, understanding and warning are essential.

Next, take a look at an in depth article on dynamic programming and its studying sources.

Vikash Gorayan

Vikash Gorayan is a technology enthusiast with a passion for gadgets and product management. He is constantly seeking new opportunities to learn and grow in his field.

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