Building Crystal in Crystal

Crystal is a compiled ruby-like language and the compiler is written in Crystal itself. That means we can build crystal in crystal! The dream of rubinius come true! Explore a live session trying to implement a new feature in crystal!

This is an impromptu talk exploring what happens if you take a Ruby developer with slight crystal knowledge and let him do a live coding session implementing features in the crystal language itself. Exciting!

(impromptu talk as a talk had to be cancelled)

Transcript

2. Speaker Tip #0: Use non standard slides
3. Speaker Tip #0: Use non standard slides
4. Speaker Tip #1: Rehearse your talk
5. Speaker Tip #1: Check for spelling and order issues
6. Speaker Tip #1: Have an engaging intro
7. Hi
8. Speaker Tip #2: Don't appologize for poorly prepared talks
9. Sorry
10. Building Crystal in Crystal Tobias Pfeiffer @PragTob Pragtob.info
11. Speaker Tip #3: Avoid bullet lists
12. Crystal • Compiled • (optionally) Statically type-checked • Method overloading • Speed • Ruby-like • http://crystal-lang.org/ • https://github.com/manastech/crystal
13. Implemented in itself
14. Rubinius?
15. Speaker Tip #4: Make sure everything is readable
18. You got my attention.
19. Let's live code a Crystal feature!
20. Speaker Tip #5: Never ever do live coding
21. Speaker Tip #6: Really don't, something will go wrong
22. Speaker Tip #7: If you do have a script or git history
23. Oops.
24. Speaker Tip #8: If you do make do it in a domain where you are really comfortable
25. I have no idea about language implementations and wrote maybe ~200 loc Crystal
26. Speaker Tip #9: If you do use an editor you know
27. Hi Atom.
29. Speaker Tip #10: Include some pictures
30. Why should this work?
31. It's just Ruby
32. It's just Ruby(-ish)
33. Let's get started!
34. Speaker Tip #11: Have a great ending
35. Thanks! @PragTob