Difference between Functional and Object Oriented Programming

Difference between Functional and Object Oriented Programming

There are two very popular programming paradigms in software development that developers design and program to. They are known as object oriented programming and functional programming. You’ve probably heard of these terms before, but what exactly are they and what is the difference between the two paradigms? Let’s take a look.

What is object oriented programming?

Object oriented programming is a programming paradigm in which you program using objects to represent things you are programming about (sometimes real world things). These objects could be data structures. The objects hold data about them in attributes. The attributes in the objects are manipulated through methods or functions that are given to the object.

For instance, we might have a Person object that represents all of the data a person would have: weight, height, skin color, hair color, hair length, and so on. Those would be the attributes. Then the person object would also have things that it can do such as: pick box up, put box down, eat, sleep, etc. These would be the functions that play with the data the object stores.

Engineers who program using object oriented design say that it is a style of programming that allows you to model real world scenarios much simpler. This allows for a good transition from requirements to code that works like the customer or user wants it to.

Some examples of object oriented languages include C++, Java, Python, C#, Objective-C, and Swift.

What is functional programming?

Functional programming is the form of programming that attempts to avoid changing state and mutable data. In a functional program, the output of a function should always be the same, given the same exact inputs to the function.

This is because the outputs of a function in functional programming purely relies on arguments of the function, and there is no magic that is happening behind the scenes. This is called eliminating side effects in your code.

For example, if you call function getSum() it calculates the sum of two inputs and returns the sum. Given the same inputs for x and y, we will always get the same output for sum.

This allows the function of a program to be extremely predictable. Each small function does its part and only its part. It allows for very modular and clean code that all works together in harmony. This is also easier when it comes to unit testing.

Some examples of Functional Programming Languages include Lisp, Clojure, and F#.

Problems with object oriented programming

There are a few problems with object oriented programing. Firstly, it is known to be not as reusable. Because some of your functions depend on the class that is using them, it is hard to use some functions with another class.

It is also known to be typically less efficient and more complex to deal with. Plenty of times, some object oriented designs are made to model large architectures and can be extremely complicated.

Problems with functional programming

Functional programming is not without its flaws either. It really takes a different mindset to approach your code from a functional standpoint. It’s easy to think in object oriented terms, because it is similar to how the object being modeled happens in the real world. Functional programming is all about data manipulation. Converting a real world scenario to just data can take some extra thinking.

Due to its difficulty when learning to program this way, there are fewer people that program using this style, which could make it hard to collaborate with someone else or learn from others because there will naturally be less information on the topic.

Comparing object oriented programming and functional programming

Both programming concepts have a goal of wanting to create easily understandable programs that are free of bugs and can be developed fast. Both concepts have different methods for storing the data and how to manipulate the data. In object oriented programming, you store the data in attributes of objects and have functions that work for that object and do the manipulation. In functional programming, we view everything as data transformation. Data is not stored in objects, it is transformed by creating new versions of that data and manipulating it using one of the many functions.

Subscribe to our Newsletter.

Thank you! Your subscription has been added to our newsletter!
Oops! Something went wrong while submitting the form.

Related Blogs.

What is Material Design Lite and what are its advantages?
logos
What is Material Design Lite and what are its advantages?
MDL stands for "Material Design Lite". It is a free and open source library used for website's designing and its a look like material design.
SEO with Angular – Angular Universal
logos
SEO with Angular – Angular Universal
SEO is an abbreviation of Search Engine Optimization. Here, you will learn how to do SEO with Angular for a web page.
How to use Font Awesome for your website?
logos
How to use Font Awesome for your website?
Font Awesome helps adding scalable and beautiful icons on a web page. Let's teach you how to use awesome fonts for your site.
JQuery: The Write Less, Do More
logos
JQuery: The Write Less, Do More
jQuery is a (write less or do more) lightweight JS library that simplifies programming with JavaScript. Know more about the benefits of using jQuery in this blog.
Cross Browser Compatibility Issues
logos
Cross Browser Compatibility Issues
What is Cross Browser issue? They usually occur in various web applications. Learn to solve these cross browser compatibility issues in this blog post.
How To Add Flash Messages in AngularJS?
logos
How To Add Flash Messages in AngularJS?
Is something wrong with adding flash messages in AngularJS? Read this guide to get professional advice.
Angular 4 FORMS Confusion
logos
Angular 4 FORMS Confusion
Many people are often stuck with the Angular 4 forms confusion. But no need to worry because this solution will work for you.
Publish Subscribe pattern
logos
Publish Subscribe pattern
Nowadays, Web Applications are set to target maximum relevant users as they can. In order to do so, an application must have these qualities.
Dependencies issue when one signal is used with google maps (React native)
logos
Dependencies issue when one signal is used with google maps (React native)
Problem Statement: Google maps work fine when used alone but it get dependency issue when one signal is added to the project.
Setup Redis on AWS
logos
Setup Redis on AWS
This tutorial will help you in setting up redis on AWS. Follow these steps to configure the redis through Amazon Linux.
React Native Facebook Login?
logos
React Native Facebook Login?
This guide provides examples of using the Facebook Login Button and Login Manager components in your React Native applications.
Create an Angular modular plugin
logos
Create an Angular modular plugin
How to develop a Modular Plug-in For angular 4? Learn to create an angular modular plugin here.

07 — Contact Us

heading glow
glow

Take the road to {digital transformation} with our top-notch software development services.

map
2 West Canal Bank Road, Lahore ,Pakistan
500 Grant Street, Downtown, Suite 2900,Pittsburgh, PA 15219, USA
3 Dalmeny Ave Huddersfield, Huddersfield, HD4 5NN, UK
DSO-IFZA , IFZA Properties, Dubai Silicon oasis, UAE
Don’t like the forms? Drop us a line via email.
Hello@phaedrasolutions.com
no-img
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Pakistan
2 West Canal Bank Road, Lahore ,Pakistan
UK
500 Grant Street, Downtown, Suite 2900, Pittsburgh, PA 15219, USA
dubai
3 Dalmeny Ave Huddersfield, Huddersfield, HD4 5NN, UK
america
DSO-IFZA , IFZA Properties, Dubai Silicon oasis, UAE