July 2019
Intermediate to advanced
310 pages
7h 26m
English
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Use Nested State
The Model currently has fields for different application concepts including view state, salad options, and contact information. This has produced an update function with too many responsibilities. You need modular patterns to manage the Model state so the application can scale. Otherwise, the update function will grow even more cumbersome over time.
In this section, you will use nested state to manage the salad portion of Model. You will modularize the application by creating a separate update function and message type for updating salad state. You will also learn the pros and cons of nested state.
Extract the Salad
One way to manage salad state is to create a Salad record type that has base, toppings, and dressing fields. Then, ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.