Functional Programming Principles

Talk about core principles of functional programming

Transcript

1. Functional λ programming-principles Alfin Surya (@natserract)
2. Outline Introduction What is functional programming? Imperative vs Functional FP Characteristics
3. What’s up! Hello! I’m Alfin I write JavaScript, Python, Elixir FP enthusiast I also like to study AI & machine learning
4. Functional Programming?
5. Function Composition
6. imperative vs λ
7. imperative functional
8. Think Different(ly) They must be very small They must do one thing only (single responsibility principle) They must have few arguments as possible (rules of three) They should not have side effects They should avoid flag arguments that create two internal paths in a function
9. FP Characteristics First-Class Functions Statelessness and Immutability Pure Functions Higher-Order Functions
10. First-Class Functions Functions are treated as first-class citizens, meaning they can be assigned to variables, passed as arguments, or returned from other functions.
11. Statelessness and Immutability Line 2: Attempt to assign to const or readonly variable
12. Pure Function ✅ Deterministic ✅ No Side Effects
13. Impure function ❌ Deterministic ❌ No Side Effects
14. Higher Order Function
15. Advantages Modularity Testability Scalability Readability
16. Slides & More https://speakerdeck.com/natserract https://medium.com/@natserract https://github.com/natserract
17. Thanks! Alfin Surya (@natserract)