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

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2. Speaker Tip #0:
   Use non standard slides
   

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3. Speaker Tip #0:
   Use non standard slides
   

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4. Speaker Tip #1:
   Rehearse your talk
   

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5. Speaker Tip #1:
   Check for spelling and
   order issues
   

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6. Speaker Tip #1:
   Have an engaging intro
   

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7. Hi
   

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8. Speaker Tip #2:
   Don't appologize for
   poorly prepared talks
   

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9. Sorry
   

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10. Building Crystal in Crystal
    Tobias Pfeiffer
    @PragTob
    Pragtob.info
    

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11. Speaker Tip #3:
    Avoid bullet lists
    

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12. Crystal
    ●
    Compiled
    ●
    (optionally) Statically type-checked
    ●
    Method overloading
    ●
    Speed
    ●
    Ruby-like
    ●
    http://crystal-lang.org/
    ●
    https://github.com/manastech/crystal
    

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13. Implemented in itself
    

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14. Rubinius?
    

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15. Speaker Tip #4:
    Make sure everything
    is readable
    

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18. You got my attention.
    

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19. Let's live code a
    Crystal feature!
    

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20. Speaker Tip #5:
    Never ever do live
    coding
    

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21. Speaker Tip #6:
    Really don't, something
    will go wrong
    

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22. Speaker Tip #7:
    If you do have a script
    or git history
    

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23. Oops.
    

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24. Speaker Tip #8:
    If you do make do it in
    a domain where you
    are really comfortable
    

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25. I have no idea about
    language
    implementations and
    wrote maybe ~200 loc
    Crystal
    

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26. Speaker Tip #9:
    If you do use an editor
    you know
    

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27. Hi Atom.
    

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29. Speaker Tip #10:
    Include some pictures
    

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30. Why should this work?
    

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31. It's just Ruby
    

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32. It's just Ruby(-ish)
    

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33. Let's get started!
    

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34. Speaker Tip #11:
    Have a great ending
    

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35. Thanks!
    @PragTob
    

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