Skip to Content
Clean Code: A Handbook of Agile Software Craftsmanship, 2nd Edition
book

Clean Code: A Handbook of Agile Software Craftsmanship, 2nd Edition

by Robert C. Martin
October 2025
Intermediate to advanced
673 pages
15h 55m
English
Addison-Wesley Professional
Content preview from Clean Code: A Handbook of Agile Software Craftsmanship, 2nd Edition

19

The SOLID Principles

This chapter is a significantly abridged and edited set of excerpts from my book Clean Architecture. It is here to give you a quick reference to the principles mentioned elsewhere in the book, and to provide you with directions for further study.

Images

Good software systems begin with clean code. If the bricks aren’t well made, the architecture of the building doesn’t matter much. On the other hand, you can make a substantial mess with well-made bricks. This is where the SOLID principles come in.

The SOLID principles tell us how to arrange our functions and data structures into classes, and how those classes should be interconnected. ...

Become 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,
and much more.

Read now

Unlock full access

More than 5,000 organizations count on O’Reilly

AirBnbBlueOriginElectronic ArtsHomeDepotNasdaqRakutenTata Consultancy Services

QuotationMarkO’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.
Head of Cybersecurity
QuotationMarkI 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.
Field Engineer
QuotationMarkI’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.
Data Platform Tech Lead
QuotationMarkI'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.
Mark W.
Embedded Software Engineer

You might also like

Clean Code: A Handbook of Agile Software Craftsmanship

Clean Code: A Handbook of Agile Software Craftsmanship

Robert C. Martin

Publisher Resources

ISBN: 9780135398586