Code Quality Learn, Measure And Organize Awareness

Code Quality :

Learn, Measure and Organize Awareness

Jaibeer Malik Code Quality: Learn, Measure and Organize Awareness http://jaibeermalik.wordpress.com

JAIBEER MALIK

2004 B.Tech from IIT KGP

Total 5 years of IT Experience in software development

Former Employers: Sapient, Globallogic

Currently working as Senior Consultant with Xebia

Certified Scrum Master

Experienced in: Java, J2ee, Unix, Flex, Distributed Agile.

Thumb rule: Delivering Quality solution to all software problems

Hobbies: Swimming, Basketball, Volleyball, Cricket...Sports

Web: http://jaibeermalik.wordpress.com

Profile: http://www.linkedin.com/in/jaibeermalik

Agenda

Common Questions

Code Quality?

Part I: Learn

Part II: Measure

Part III: Organize Awareness

References

Questions

Feedback

Common Questions (Developer)? Jaibeer Malik Code Quality: Learn, Measure and Organize Awareness http://jaibeermalik.wordpress.com

Common Questions (Manager)? Jaibeer Malik Code Quality: Learn, Measure and Organize Awareness http://jaibeermalik.wordpress.com

Common Questions (Team)? Jaibeer Malik Code Quality: Learn, Measure and Organize Awareness http://jaibeermalik.wordpress.com

Code Quality?

#Source_code_quality

“ A computer has no concept of "well-written" source code. However, from a human point of view source code can be written in a way that has an effect on the effort needed to comprehend its behavior. Many source code programming style guides, which often stress readability and usually language-specific conventions are aimed at reducing the cost of source code maintenance.”

Complaining about Other People's Code

“ W hen we first encounter a new software system we are, in Dunning and Kruger’s terminology, incompetent compared to the programmers that wrote it.”

Things you should never do

“ It’s harder to read code than to write it.”

Code Quality - WTFs? Jaibeer Malik Code Quality: Learn, Measure and Organize Awareness http://jaibeermalik.wordpress.com

PART I: Learn

Focus On Fundamentals

Start with Basics

Material

Games

How to write Clean Code

Figure out bad smells and improve code

WTFs and Refactoring

Focus On Fundamentals

Start with Basics

Design Principles (S.O.L.I.D.)

OOA/OOD/OOP

Design Patterns

Enterprise Integration Patterns

Anti Patterns

Material (e.g. Head First Design Patterns)

Games

Patterns Poker, Name that Pattern

Clean Code & Refactoring

How to write clean code

Clean Code

Implementation Patterns

Code Complete

Figure out bad smells and improve code

WTFs?

Refactoring: Improving the design of Existing code

Refactoring Catalog

Refacotring Tools

PART II: Measure

Common Problems

Common Measurement Criteria

Measurement Tools

Static Code Analysis

Why SCA?

SCA Tools

Enforce Quality

WARNING!!!

Common Problems

Code Duplication

Big Size files

Unhandled exception

Large cyclomatic complexity

Infinite Loops

Dead code

Unused variables, parameters, method, classes

Test coverage

Coding standards violations

...

Common Measurement Criteria

Cyclomatic Complexity

Coupling

Abstractness

Stability

Cyclic Dependencies

Maintainability Index

ReUse ratio

...

Static Code Analysis

Why Static Code Analysis (SCA)?

Code Coverage Measurement Tools

Clover, Cobertura

SCA Tools

PMD, FindBugs, Sonar, Simian, CheckStyle, Metrics, XRadar

How to use SCA tools

Integrate with build process (ant/mvn target)

Separate quality build

Enforce Quality

Svn pre-commit handlers

PART III: Organize Awareness

Code Quality as Knowledge/Learning

Why to share with-in team?

Share and Organize

Pair-Programming

Share on wiki

Coding standards documents

Quality watch dog

Fix it and let people know

Technical Debt

Organize Awareness: As Team

Few points to keep in mind as team

Pair-up more

On-going process

Share in positive way

Motivate people to fix it and share

Talk more about quality

Quality watch dog on rotation basis

Continuous watch on technical debt

References

Jai's Weblog:

http://jaibeermalik.wordpress.com/2009/04/12/code-quality-learn-measure-and-organize-awareness/

http://jaibeermalik.wordpress.com/2009/04/12/code-quality-learn-oops-desing-patterns-clean-code-and-refactoring/

http://jaibeermalik.wordpress.com/2009/04/12/code-quality-measurement-static-code-analysis-tools/

http://jaibeermalik.wordpress.com/2009/04/12/code-quality-organizing-awareness-with-in-the-team/

TSS:

http://www.theserverside.com/news/thread.tss?thread_id=54245

InfoQ:

http://www.infoq.com/news/2009/06/code-quality-for-teams

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Feedback!!! [email_address] [email_address] Follow me @ http://twitter.com/jaibeermalik http://friendfeed.com/jaibeermalik Jaibeer Malik Code Quality: Learn, Measure and Organize Awareness http://jaibeermalik.wordpress.com