Book Review: Clean Code: Chapter 6. Objects and Data structures

This is review of the 6th chapter from the book-”Clean Code: A Handbook of Agile Software Craftsmanship” by Robert C. Martin.

In this chapter, Robert points out the important difference between Objects and Data Structures. Former are classes with expose a well defined behaviour- hiding the data, while the latter are all about data and have no behavior to offer.

Data abstraction is simply not about making all the members private and provide access to them via public setter\getter. This doesn’t hide the data . It simply exposes the data via the setter\getters !!!

This is perhaps the most misunderstood concept behind OOP. For eons- people have related encapsulation to simply making all members as private . No sir. It takes more than that.

Interaction between objects should be a series of commmands- each asking the other to do something. Kind of “Tell. Don’t Ask” . By asking for – you are basically asking the other class to expose it’s internals to you.

It also increases the chatiness between classes.

For review of other chapters- please see this post.

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