Understand pure and impure functions with side effects

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Pure and Impure functions are the two terms that you always hear in a programming language. Pure Function is always dependent on arguments and there should not be any side effects. Side Effects are when you try to use external code in the function or if you are mutating a variable then it creates a Side Effect.

Pure vs Impure Functions

A simple and good learning bit about a important concept of functional proggraming. New devs should learn this!

Simple is the best word to express the overall feeling of this article. Highly recommend to read for beginners

That is so important to handle this as soon as possible as a developer !