The document compares functional programming (FP) concepts and paradigms to object-oriented programming (OOP). It lists FP concepts like lambda calculus, recursion, immutable data, and pure functions. It then asks rhetorical questions about where common OOP elements like variables, methods, objects, and exceptions are in FP. Similarly, it asks where FP elements like functions, function composition, and pattern matching are in OOP. It lists several functional programming languages and real-world companies using FP. It concludes by inviting questions about FP.

1. OOP |> FP
—
Michel Pérez

2. I am ...
● Software Architect at Liftit
● FP enthusiast
● Polyglot
● Troll
● @geekcoders

3. FP Concepts
● Lambda calculus
● Lisp (1950)
● All you need are functions
● Recursion
● Immutable
● Multi-procesing
● Easy to test
● Easy to maintain
● Better abstractions

4. Pure functions
● Easier to test
● Easier to maintain
● Easier to compose

5. OOP way
Ejemplo Explicativo:

6. FP Way
Ejemplo Explicativo:

7. Where the f*ck is my OOP?

8. Keep calm and all you
need is lambda

9. Where is my
Lambda
—
**Programación Funcional

10. Where are my
variables?
—
**Programación Funcional
—
**Programación Orientada a objetos

11. Where are my methods?
Declaring a constant:
—
**Programación Funcional
—
**Programación Orientada a objetos

12. Where is my public
static void main?
—
**Programación Funcional
—
**Programación Orientada a objetos

13. Where is my if?
—
**Programación Funcional
—
**Programación Orientada a objetos

14. Where is my switch?
—
**Programación Funcional
—
**Programación Orientada a objetos

15. Where are my objects?
—
**Programación Funcional
—
**Programación Orientada a objetos

16. Where are my
collections?
—
**Programación Funcional
—
**Programación Orientada a objetos

17. Where are the
collections operations?
—
**Programación Funcional
—
**Programación Orientada a objetos

18. Where is the
performance in
collections?

19. Where is my foor loop?
—
**Programación Orientada a objetos
—
**Programación Funcional

20. Where is my Pipe?

21. Where is my pattern
matching?

22. Where is my curry?

23. Where is my
NullPointerException? —
**Programación Orientada a objetos
—
**Programación Funcional

24. Where is my try/catch?
—
**Programación Orientada a objetos
—
**Programación Funcional

25. ● Functions
● First class functions
● Function Piping
● Function compositions
● Partial application
● more functions ...
Where are my
patterns?

26. Where are the
programming languages?
● Elixir
● Erlang
● Elm
● Lisp
● Haskell
● Reasonml
● Purescript
● Scala
● Clojure
● Fsharp
● Ocaml
● Rust
● Idris

27. ● Microsoft
● Facebook
● Twitter
● Linkedin
● Coursera
● Pinterest
● Whatsapp
● Liftit
● Tappsi
Where are the real
world use cases?

28. Where are the jobs?
● Liftit
● Tappsi

29. Love FP <3

30. Questions?