April 2018
Intermediate to advanced
298 pages
6h 34m
English
Content preview from React 16 Tooling
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Time travel debugging
One requirement of reducer functions in Redux is that they're pure; that is, they only return new data as opposed to mutating existing data. One consequence of this is that it enables time travel debugging. Because nothing ever changes, you can move the state of your application forward, backward, or to an arbitrary point in time. The Redux DevTools make this easy to do.
To see time travel debugging in action, let's type some filter text into the filter input box:
Looking at the actions in Redux DevTools, you should see something along these lines:
I've selected the last SET_FILTER_VALUE action that was dispatched. The ...
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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.