Things I enjoy working with Elixir

In this talk I will show you the features that I like the most about Elixir and its ecosystem. What do I find most attractive? What language features make me more productive? How did I learn Elixir by myself in my spare time? Which tools and frameworks do I use?

Transcript

1. Carmen Berros Things I enjoy working with Elixir
2. Who am I? I work in Solarisbank AG, in the Lending Unit as Senior Software Engineer https://www.linkedin.com/in/mcberros/?locale=en_US
3. How did I learn Elixir by myself in my spare time? - Udemy - https://elixir-lang.org/ - Practice, practice, practice: https://exercism.org/
4. Which tools and frameworks do I use? - Visual Studio Code - ElixirLS - Phoenix - iex
5. What is Elixir? - Dynamic, functional language for building scalable and maintainable applications. - Elixir leverages the Erlang VM, known for running low-latency, distributed, and fault-tolerant systems.
6. Language features Dynamic Types are checked in run-time, not during compilation. Static types can be introduced in Elixir through typespecs.
7. Language features Functional - Immutable data structures and no changing state - Functions are treated as first-class citizens
8. Platform features Scalability - All Elixir code runs inside lightweight threads of execution (called processes) that are isolated and exchange information via messages Fault-tolerance - Elixir provides supervisors which describe how to restart parts of your system when things go awry, going back to a known initial state that is guaranteed to work.
9. Pattern matching everywhere
10. Arguments of functions
11. Arguments of functions
12. Arguments of functions
13. Multiple Clause Functions
14. Case
15. Multiple Clause
16. with
17. Pipe operator
18. Anonymous functions
19. Loops
20. Recursion
21. Enumerables - Enum
22. Erlang - We can use Erlang libraries from within their Elixir code. - Most common: - :crypto - hashing functions, digital signatures, encryption - :timer - functions related to time - :math - mathematical functions - :io - format text output - :rand - random values
23. Mix
24. Create a project with mix
25. Configuration and dependencies
26. Tests
27. OTP
28. And the state? - Functional: No changing state - How do we maintain the state of a loan or a person? - We could use: - Using Processes and message passing - ETS (Erlang Term Storage) - Or abstractions instead of Processes directly: - Agent - Simple wrappers around state. - GenServer - “Generic servers” (processes) that encapsulate state, provide sync and async calls, support code reloading, and more. - Task - Asynchronous units of computation that allow spawning a process and potentially retrieving its result at a later time.
29. Persistent workflows - We can use persistent workflows - We get the entity from the database, apply the operation, save in the database and continue the workflow - It is very easy to follow the flow
30. Supervisors & Applications
31. Applications
32. Applications
33. Tasks
34. Tasks
35. Tasks
36. Tasks
37. Sources - https://elixir-lang.org/ - https://serokell.io/blog/introduction-to-elixir - https://exercism.org/tracks/elixir/concepts - https://hexdocs.pm/
38. Q&A