Functions and data: the essence of Functional Programming

In the beginning, there were only functions and data. Maybe it’s enough? We’ll look at the advantages of pure functions and immutable data. Then, we’ll go for an adventure of programming with only that, and see whether we’re missing anything. Hopefully, we’ll see that it’s entirely possible and reasonable to write programs that are:

• just as useful as the ones written with mutability, runtime reflection, dependency injection frameworks, side effects and exceptions
• much easier to test, parallelize, refactor and change than otherwise by only using pure functions and immutable data types.

Session length

40 minutes

Language of the presentation

English

Target audience

Beginner: No need to have prior knowledge

Who is your session intended to

Beginners in functional programming, people who want to make their code more functional

Speaker

Jakub Kozłowski (Ocado Technology)

• Posted in another submission :)

Contributes

• cats
• cats-effect
• fs2 (contributor)