Jan

20

PBS 48 of x – A Closer Look at ‘this’ and ‘static’

Filed Under Computers & Tech, Software Development on January 20, 2018 | 2 Comments

This post is part 48 of 92 in the series Programming by Stealth

I had initially planned to return to our Cellular Automata classes and Conway’s Game of Life for this instalment, but based on some listener feedback I’ve decided to delay that by at least one instalment and dedicate this entire instalment to a closer look at just two JavaScript keywords – this and static instead. The two are more closely related that you might think.

The ZIP file for this instalment contains my sample solution to the challenge set at the end of the previous instalment, the starting point for the next challenge, and a JavaScript file containing all the example code snippets that appear in this instalment.

Read more

Tagged with: • • • •

Jan

6

PBS 47 of x – ES6 Polymorphism

Filed Under Computers & Tech, Software Development on January 6, 2018 | 2 Comments

This post is part 47 of 92 in the series Programming by Stealth

In this instalment we’ll wrap up our look at new features added to JavaScript with the release of ES6. We haven’t come even close to looking at all the new features brought by ES6, instead, we’ve just looked at a curated selection of some of the most useful new features.

Thanks to the power of the new class syntax introduced as part of ES6, we can now learn about two really important object oriented concepts which I had previously been avoiding because of how horrible the old syntax was. What we’ll be looking at are the very closely related concepts of inheritance and polymorphism.

To illustrate the concepts, and to lay the ground work for this instalment’s challenge, we’ll be making our way through a worked example. You can find the code in this instalment’s ZIP file, which you can download here.

Read more

Tagged with: • •