Solid Principles In The Wild

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Notes on slide 1

SOLID is an acronym of acronyms for a set of Object-Oriented Programming Principles that help developers create code that is loosely coupled, highly cohesive and easily extensible.

Coupling describes how dependent one object is on another.

Cohesion is a measure of how well objects in a system work together.

Extensibility it the measure of effort it takes to add or change something in an existing system.

A class should have one, and only one, reason to change.

A class should be open for extension, but closed for modification.

Derived classes must be substitutable for their base classes.

Make fine grained interfaces that are client specific.

Depend on abstractions, not on concretions.

Let’s see some of these things in the wild.

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Solid Principles In The Wild - Presentation Transcript

Mutual Development’s SOLID Kingdom How to Spot SOLID Code in the Wild
Coupling
cohesion
Extensibility
Single Responsibility
Open Closed
Lizkov Substitution
Interface Segregation
Dependency Inversion
Let’s Hunt
Questions?
Thank You • http://butunclebob.com/ArticleS.UncleBob.PrinciplesOfOod • http://www.lostechies.com/content/pablo_ebook.aspx • http://hanselminutes.com/default.aspx?showID=163 • http://www.slideshare.net/clintedmonson/advanced-oop- laws-principles-idioms-presentation?type=powerpoint Lee Brandt @leebrandt www.codebucket.org