EuRuKo 2024 — How Ruby Forged Crystal

Slides for HRFC talk at EuRuKo 2024 in Sarajevo, Bosnia i Herzegovina.

Transcript

1. How Ruby forged Crystal Rafael Peña-Azar · EuRuKo · 13 September 2024
2. Who’s RPA? @rpaweb
3. Who’s RPA? ❏ Colombian ❏ Programmer ❏ Public speaker ❏ Technical writer ❏ Aspiring entrepreneur ❏ Ruby/Rails evangelizer ❏ Founder of RubySantaMarta ❏ Crystal enthusiast @rpaweb
4. Crystal?
5. I’m not here to tell you to stop programming in Ruby.
6. 2011 The beginnings 2013 Become self-hosting 2014 First official release 2016 TIOBE & First stable release 2024 Growing popularity & v1.13.2 2021 v1.0.0
7. GENERAL-PURPOSE HIGH-LEVEL OOP STATIC TYPE-CHECKING COMPILED
11. Crystal has grown in popularity and has an active community.
13. INFLUENCE
16. Crystal’s static type–checking
17. Crystal’s static type-checking ❏ Type Inference ❏ Optional Type Annotations ❏ Nil Safety ❏ Union Types ❏ Error Messages and Feedback
18. Crystal’s static type-checking ❏ Type Inference ❏ Optional Type Annotations ❏ Nil Safety ❏ Union Types ❏ Error Messages and Feedback
20. Crystal’s static type-checking ❏ Type Inference ❏ Optional Type Annotations ❏ Nil Safety ❏ Union Types ❏ Error Messages and Feedback
22. Crystal’s static type-checking ❏ Type Inference ❏ Optional Type Annotations ❏ Nil Safety ❏ Union Types ❏ Error Messages and Feedback
24. Crystal’s static type-checking ❏ Type Inference ❏ Optional Type Annotations ❏ Nil Safety ❏ Union Types ❏ Error Messages and Feedback
26. Crystal’s static type-checking ❏ Type Inference ❏ Optional Type Annotations ❏ Nil Safety ❏ Union Types ❏ Error Messages and Feedback
27. DIVERGENCE
28. NATIVE COMPILATION CONCURRENCY MECHANISMS
29. Fibers
31. Macros
33. Web Servers
35. FUTURE
36. Crystal !
37. How Ruby forged Crystal Rafael Peña-Azar · EuRuKo · 13 September 2024