April 2018
Intermediate to advanced
284 pages
5h 46m
English
Content preview from Simplifying JavaScript
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| Tip 26 | Transform Array Data with reduce() |
In this tip, you’ll learn how use reduce() to generate a new array with a different size and shape.
You’re probably tired of hearing me say that good code is predictable. But it’s true. Array methods are wonderful because you have an idea of the result at a glance without even understanding the callback function. Not only that, but array methods are easier to test and, as you’ll see in Tip 32, Write Functions for Testability , it’s much easier to write testable code than it is to add tests to complex code.
Still, there are times when you need to create a new, radically different piece of data from an array. Maybe you need to get a count of certain items. Maybe you want to transform the array to a ...
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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.
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