JustinDSN / RxStateManagment

A code lab for learning state management with RxSwift

RxStateManagment

A code lab for learning state management with RxSwift

Background

I was inspired by Jake Wharton's talk on "Managing State with RxJava" https://jakewharton.com/the-state-of-managing-state-with-rxjava/. If you haven't watched it, I recommend starting there. Afterward, clone the repo and work through the code lab.

Checkpoints

• Checkpoint 1 - Managing state starting point.
  • This is the starting point of the code lab:
    • We have a simple CreateAccountViewController that is presented when the user taps on the Create Account button.
    • Inside the implementation of the CreateAccountViewController you will find familiar Rx code that you'd might write. In Jake Wharton's talk, he discusses the so-called bad practices of side effects (aka. .do(onNext() and leaving the monad) that we typically write when we get started with Rx.
    • In the talk, he identifies several red lines:
      • In the flatMap we reach into the UI and get the text out of the two UITextFields.
      • Before and after the network calls, we use a do(onNext()) to disable/enable the createAccountButton and to show/hide the processingView.
    • Let's see if we can improve this!

Identify UI States