A modern programming language that makes developers happier.

kotlinlang

<https://developer.android.com/courses/kotlin-bootcamp/overview>
I am learning from this resource. I have learned till extensions by now. But I want to practise as I proceed to implement and solidify the content learned. Can you suggest any good sources for this purpose???

I went through the koans. I was looking for some problem solving kind of stuff where I can apply the learnings as I proceed.

<https://projecteuler.net/archives> has lots of math-oriented problems