A modern programming language that makes developers happier.

kotlinlang

I started chapter on reactive patterns. Feel free to call me out for self-promoting my own libraries (RxJavaFX and RxKotlinFX). I thought about covering ReactFX but I realized it would be redundant to cover both ReactFX and RxKotlinFX. They both express the same general concepts and core operators (`map(),` `flatMap()`, `filter()`, `reduce()`, etc). However, RxKotlinFX supports asynchronous operations much better since it was built on RxJava, and some pretty cool things can be built on that capability. I intend to demo some asynchronous tricks since that is a big problem with UI development.