May 2019
Intermediate to advanced
496 pages
10h 38m
English
Content preview from Mastering React Test-Driven Development
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Building a Logo Interpreter
Logo is a programming language that was created in the 1960s. It was, for many decades, a popular way to teach children how to code. I have fond memories of writing Logo programs back in high school. What better way to relive my childhood than by building a Logo interpreter with React?
The application we'll build is called Spec Logo. The code for the interpreter and the barebones UI have already been written. In the following three chapters, we'll bolt on additional features to this codebase.
This chapter covers the following topics:
- Studying the Spec Logo user interface
- Undoing and redoing user actions in Redux
- Saving to LocalStorage via Redux middleware
- Changing keyboard focus
Of course, we'll be doing all ...
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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.