Ary Borenszweig (Asterite) is doing advent of code in Crystal. Since he is the creator of the language, it's a good way to learn how it is intended to be used.

I would recommend to start with day three, since in the first two videos, you can't see what he is typing:

https://www.youtube.com/@the-asterite/streams

#CrystalLang

#introduction
Hello community! Let me #introduce myself. I'm a #softwaredeveloper experienced in #java, #csharp, #javascript / #typescript and much more! I'm currently dabbling in #ruby and interestingly in #CrystalLang !

Total #geek in my spare time I dabble in #unity3d and anything in #vr #virtualrealty. I also spend time riding my bike and hanging out with my amazing daughter 😊

I just started a new dev blog, check it out when you can! https://www.aptdev.online/

Nice optimization in the liquid templating library for #CrystalLang

Scenario 2019: Github issue with a performance bug (the ported Crystal being 2.5x slower then the Ruby code):
https://github.com/TechMagister/liquid.cr/issues/40

Now: Asterite (the Crystal language creator) looks into it; does some basic optimizations (replacing dynamic RegExps by constants, and avoid unnecessary array allocations):
https://github.com/TechMagister/liquid.cr/pull/62

Result: from 2.5x slower the Ruby, the rendering improved to over 40x faster then Ruby

I'm experimenting with Ktistec, the #CrystalLang single-user #ActivityPub server. I've got it running and can follow accounts on it from Mastodon. Will keep playing around with it. My account is here

https://k.matthias.org

Single user #ActivityPub server written in #CrystalLang. Looks pretty cool.

https://github.com/toddsundsted/ktistec