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EuRuKo 2024 — How Ruby Forged Crystal
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Rafael Peña-Azar
September 13, 2024
Programming
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EuRuKo 2024 — How Ruby Forged Crystal
Slides for HRFC talk at EuRuKo 2024 in Sarajevo, Bosnia i Herzegovina.
Rafael Peña-Azar
September 13, 2024
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Transcript
How Ruby forged Crystal Rafael Peña-Azar · EuRuKo · 13
September 2024
Who’s RPA? @rpaweb
Who’s RPA? ❏ Colombian ❏ Programmer ❏ Public speaker ❏
Technical writer ❏ Aspiring entrepreneur ❏ Ruby/Rails evangelizer ❏ Founder of RubySantaMarta ❏ Crystal enthusiast @rpaweb
Crystal?
I’m not here to tell you to stop programming in
Ruby.
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
GENERAL-PURPOSE HIGH-LEVEL OOP STATIC TYPE-CHECKING COMPILED
None
None
None
Crystal has grown in popularity and has an active community.
None
INFLUENCE
None
None
Crystal’s static type–checking
Crystal’s static type-checking ❏ Type Inference ❏ Optional Type Annotations
❏ Nil Safety ❏ Union Types ❏ Error Messages and Feedback
Crystal’s static type-checking ❏ Type Inference ❏ Optional Type Annotations
❏ Nil Safety ❏ Union Types ❏ Error Messages and Feedback
None
Crystal’s static type-checking ❏ Type Inference ❏ Optional Type Annotations
❏ Nil Safety ❏ Union Types ❏ Error Messages and Feedback
None
Crystal’s static type-checking ❏ Type Inference ❏ Optional Type Annotations
❏ Nil Safety ❏ Union Types ❏ Error Messages and Feedback
None
Crystal’s static type-checking ❏ Type Inference ❏ Optional Type Annotations
❏ Nil Safety ❏ Union Types ❏ Error Messages and Feedback
None
Crystal’s static type-checking ❏ Type Inference ❏ Optional Type Annotations
❏ Nil Safety ❏ Union Types ❏ Error Messages and Feedback
DIVERGENCE
NATIVE COMPILATION CONCURRENCY MECHANISMS
Fibers
None
Macros
None
Web Servers
None
FUTURE
Crystal !
How Ruby forged Crystal Rafael Peña-Azar · EuRuKo · 13
September 2024