Gleam Cata

In this short talk, we will briefly present the basics of the Gleam programming language, one of the latest additions to the BEAM ecosystem.

Transcript

1. The GLEAMing bridge between JavaScript and the BEAM Laura M. Castro
2. Gleam Paradigm Gleam is a functional programming language Typing Type-safe, static, inferred First release v0.1 April 15, 2019 v1.0 March 4, 2024 Memory management Garbage collected Gleam logo features Lucy the starfish, by Louis Pilfold
3. The BEAM Erlang OTP Process management, supervision, distribution Open Source Apache 2.0 license (1998) Elixir A new language for the same platform (2010) Community CodeBEAM Erlang Ecosystem Foundation 2nd most admired language after Rust (StackOverflow Developer Survey 2024) Industry Functional language, concurrency and fault- tolerance oriented (1986)
4. The BEAM Erlang Functional language, concurrency and fault- tolerance oriented (1986) OTP Process management, supervision, distribution Open Source Apache 2.0 license (1998) Elixir A new language for the same platform (2010) Community CodeBEAM Erlang Ecosystem Foundation 2nd highest median salary after Rust (StackOverflow Developer Survey 2024) Industry
5. The BEAM Erlang Functional language, concurrency and fault- tolerance oriented (1986) OTP Process management, supervision, distribution Open Source Apache 2.0 license (1998) Elixir A new language for the same platform (2010) Community CodeBEAM Erlang Ecosystem Foundation 2nd highest median salary after Erlang (StackOverflow Developer Survey 2024) Industry
6. Everything is a function no side effects (referential transparency) Share nothing pass-by-value Let it crash happy-path focused + supervision trees The four pillars of the BEAM Asynchronous message passing private mailboxes + location transparency
7. Everything is a process very lightweight processes Share nothing pass-by-value Let it crash happy-path focused + supervision trees The four pillars of the BEAM Asynchronous message passing private mailboxes + location transparency
8. Command $ gleam new cata_gleam Creating a new project in Gleam
9. Command $ cd cata_gleam $ tree Gleam project structure
10. Command $ open src/cata_gleam.gleam Gleam module structure
11. Command $ gleam run Gleam execution
12. Command $ gleam run --target javascript Gleam targeted execution
13. Command $ open src/cata_gleam.gleam Gleam syntax
14. Command $ open test/cata_gleam_test.gleam Gleam tests
15. Command $ gleam test Gleam test execution
16. Command $ gleam test --target javascript Gleam test targeted execution
17. Command $ open src/cata_gleam.gleam Gleam syntax (ii)
18. Command $ open src/cata_gleam.gleam Gleam syntax (ii)
19. Command $ open src/cata_gleam.gleam Gleam syntax (ii)
20. Command $ create src/cata_process.gleam Gleam processes
21. Command $ gleam run –m cata_process Gleam process execution
22. Command $ create src/ cata_processes.gleam Gleam processes (ii)
23. Command $ create src/ cata_processes.gleam Gleam processes (ii)
24. Command $ gleam run –m cata_process Gleam process execution (ii)
25. Command $ open src/cata_task.gleam Gleam processes (tasks)
26. Command $ open src/cata_actor.gleam Gleam processes (actors)
27. Command Gleam processes (actors) $ open src/cata_actor.gleam
29. Command $ gleam run –m cata_process --target javacript Gleam process targeted execution
31. Gleam gleam.run Contact me! lcastro@udc.gal Credits Slidesgo and Freepik Thanks! Community discord.com/invite /Fm8Pwmy Tour tour.gleam.run Get the code gitlab.com/lauramc astro/gleam-cata Get the slides speakerdeck.com /lmcastro/gleam -cata
32. Things I like about Gleam Enforces func. code No for, if, while Types, inferred
33. Things I miss on Gleam No overload Unique fun. names Limited pattern- matching Limited process interaction Limited monitoring Interactive shell REPL