Introduction

Up until now we have been taking a low level approach to state management. We have been working directly with the underlying concepts and seeing exactly how the data flow from our sources to our state works.

• We create a source that is an observable stream
• We subscribe to that source to pull the data out
• We update a signal using the value from the source

It is important to understand what is going on and doing everything more manually like this is a great way to learn the concepts.

In fact, I think it is fine to use the approach we have been using indefinitely — there is some boilerplate involved, but it is still reasonably simple to set up.