Crystal Mentors

Our mentors are the human element behind Exercism, providing empathetic feedback on learners' solutions.
Avatar of Todd Resudek

Todd Resudek

I am happy to help. Crystal is a beautiful language that is also very fast.
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Lukas Gerlach

I'm studying CS and work as a FE Dev. I currently enjoy crystal very much, so I'm happy to help you learning it.
Avatar of DT


I'm here to beat the devil out of your code