🎈 Float Option Button is a Float Action Button (fab) with two option button drawer that can expand and collapse with many custom attrs

Either and Option implementation in Kotlin Multiplatform

Optional for Kotlin

Kotlin utility types based on Scala

4.1 - Functor Option

kotlin functional extension library

Approaches how to deal with null in Kotlin.

Implementation of Option<T> and Result<T, E> for Kotlin