Christian Clausen – författare

Improving existing code—refactoring—is one of the most common tasks you’ll face as a programmer.   Five Lines of Code  teaches you clear and actionable refactoring rules that you can apply without relying on intuitive judgements such as “code smells.” It’s written for working developers, guiding you step by step through applying refactoring patterns to the codebase of a 2D puzzle game. Following the author’s expert perspective—that refactoring and code smells can be learned by following a concrete set of principles—you’ll learn when to refactor your code, what patterns to apply to what problem, and the code characteristics that indicate it’s time for a rework. Thanks to this hands-on guide, you’ll find yourself programming faster while still delivering high-quality code that your teammates will love to work with. about the technology

Refactoring is a fact of life. All code is imperfect, and refactoring is a systematic process you can use to improve the quality of your codebase. Whatever your architecture, choice of OO language, or skill as a programmer, the continuous design improvements of refactoring make your code simpler, more readable, and less prone to bugs. You’ll be amazed at the productivity boost of adding refactoring to your code hygiene routine—it’s quicker to hammer out bad code and then improve it than spending hours writing good code in the first place! about the book

Five Lines of Code  teaches working developers the shortcuts to quality code. You’ll follow author Christian Clausen’s unique approach to teaching refactoring that’s focused on concrete rules, and getting any method down to five lines or less to implement! There’s no jargon or tricky automated-testing skills required, just easy guidelines and patterns illustrated by detailed code samples. Chapter by chapter you’ll put techniques into action by refactoring a complete 2D puzzle game. Before you know it, you’ll be making serious and tangible improvements to your codebase. what's inside

The symptoms of bad code The extracting method, introducing strategy pattern, and many other refactoring patterns Modifying code safely, even when you don’t understand it Writing stable code that enables change-by-addition Proper compiler practices Writing code that needs no comments Real-world practices for great refactoring about the reader

For developers who know an object-oriented programming language. about the author

Christian Clausen  works as a Technical Agile Coach teaching teams how to properly refactor their code. Previously he worked as a software engineer on the Coccinelle semantic patching project, an automated refactoring tool. He has an MSc in computer science, and five years’ experience teaching software quality at a university level.

Five Lines of Code teaches refactoring that's focused on concrete rules and getting any method down to five lines or less! There’s no jargon or tricky automated-testing skills required, just easy guidelines and patterns illustrated by detailed code samples.In Five Lines of Code you will learn: The signs of bad code Improving code safely, even when you don’t understand it Balancing optimization and code generality Proper compiler practices The Extract method, Introducing Strategy pattern, and many other refactoring patterns Writing stable code that enables change-by-addition Writing code that needs no comments Real-world practices for great refactoring Improving existing code—refactoring—is one of the most common tasks you’ll face as a programmer. Five Lines of Code teaches you clear and actionable refactoring rules that you can apply without relying on intuitive judgements such as “code smells.” Following the author’s expert perspective—that refactoring and code smells can be learned by following a concrete set of principles—you’ll learn when to refactor your code, what patterns to apply to what problem, and the code characteristics that indicate it’s time for a rework. Foreword by Robert C. Martin. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. About the technology Every codebase includes mistakes and inefficiencies that you need to find and fix. Refactor the right way, and your code becomes elegant, easy to read, and easy to maintain. In this book, you’ll learn a unique approach to refactoring that implements any method in five lines or fewer. You’ll also discover a secret most senior devs know: sometimes it’s quicker to hammer out code and fix it later! About the book Five Lines of Code is a fresh look at refactoring for developers of all skill levels. In it, you’ll master author Christian Clausen’s innovative approach, learning concrete rules to get any method down to five lines—or less! You’ll learn when to refactor, specific refactoring patterns that apply to most common problems, and characteristics of code that should be deleted altogether. What''s inside The signs of bad code Improving code safely, even when you don’t understand it Balancing optimization and code generality Proper compiler practices About the reader For developers of all skill levels. Examples use easy-to-read Typescript, in the same style as Java and C#. About the author Christian Clausen works as a Technical Agile Coach, teaching teams how to refactor code. Table of Contents 1 Refactoring refactoring 2 Looking under the hood of refactoring PART 1 LEARN BY REFACTORING A COMPUTER GAME 3 Shatter long function 4 Make type codes work 5 Fuse similar code together 6 Defend the data PART 2 TAKING WHAT YOU HAVE LEARNED INTO THE REAL WORLD 7 Collaborate with the compiler 8 Stay away from comments 9 Love deleting code 10 Never be afraid to add code 11 Follow the structure in the code 12 Avoid optimizations and generality 13 Make bad code look bad 14 Wrapping up

This stimulating book proposes the concept of staging as a tool for planning and facilitating design and innovation activities. Drawing on a predominantly Scandinavian tradition of participatory design research and sociotechnical perspectives from actor-network theory, it discusses how staging can enable co-design, sustainable transitions and social and radical innovation.Expert researchers and practitioners present in-depth case studies on how staging can be used in practice, including co-design within the health sector, product development in industry, energy practices and urban development. Chapters also explore theoretical and conceptual developments, such as the possible spaces for staging, the role of material objects, travel and circulation of knowledge and the use of spatial and theatrical metaphors. Reflecting on how staging is practiced in a variety of settings, the book illustrates collaborative strategies that shape design and innovation processes.This book is critical reading for academics and students with an interest in public policy, knowledge management and organizational innovation. Providing actionable strategies based on participatory design, shaping technology and organizational theory, it will also be beneficial for design engineers, city planners and technology managers.