2.1 - What is Functional Programming? | Advanced Python

Pubblicato il: 07 aprile 2024
sul canale di: AxOps Academy

In this first video, we'll explore the concept of functional programming in Python. Python is a versatile language that allows you to solve problems in different ways. One such approach is functional programming, which is different from the usual way of writing programs in Python.

Basic Concepts of Functional Programming:

1. Avoiding Side Effects: Normally, when you write a function in programming, it might change some values or data outside of the function. This is called a side effect. In functional programming, we try to avoid this. Instead, we focus on making functions that don't change anything outside of themselves.

2. Referential Transparency: This is a fancy term, but it simply means that a function always gives the same result with the same inputs and doesn't affect or get affected by anything else in the program. For example, if you have a function that calculates the square of a number, it will always give the same result for the same number.

3. Pure Functions: These are functions that don't cause side effects and are referentially transparent. They're like a maths formula: you put something in, and you always get the same result out, without changing anything else.

4. First-class Functions: In Python, functions are treated like any other variable. You can assign them to variables, pass them around in your program, and do all sorts of things with them, just like you would with a number or a string.

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