June 2018
Beginner
288 pages
6h 31m
English
Content preview from Rediscovering JavaScriptBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 9Using Modules
Well-designed software is cohesive. Cohesion is when a piece of code is narrow, focused, and does one thing well. A good designer strives to achieve cohesion at all levels: functions, classes, and especially files.
A well-designed file should contain only things closely related to each other. Like things should be together in one file, and unlike things should be apart from each other in different files. In addition to making the code cohesive, small files focused on one particular concern also promote better reuse.
Nontrivial applications need many functions and multiple classes with intricate dependencies. Having the ability to access everything from everywhere leads to chaos, confusion, and errors. A piece of code ...
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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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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.