INETA Community Speakers Program

S.O.L.I.D Design and Development

http://Solid.Architecture.MichaelKappel.com
Software Development Community Presentation by Michael Kappel
Overview
SRP
OCP
LSP
ISP
DIP

Solid Software Development
My Interpretation of the Solid Principles of Object Oriented Design

Solid Development Principles from Michael Kappel on Vimeo.

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CITAG

Principles of Object Oriented Design at TechNexus for CITAG the Chicago Information Technology Architects Group on August, 16th 2011



SOLID was introduced by Robert C. Martin in the an article called the “Principles of Object Oriented Design” in the early 2000s
http://www.objectmentor.com/omTeam/martin_r.html
S 	SRP 	

Single responsibility principle
    the notion that an object should have only a single responsibility.


O 	OCP 	

Open/closed principle
    the notion that “software entities … should be open for extension, but closed for modification”.


L 	LSP 	

Liskov substitution principle
    the notion that “objects in a program should be replaceable with instances of their subtypes without altering the correctness of that program”. See also design by contract.


I 	ISP 	

Interface segregation principle
    the notion that “many client specific interfaces are better than one general purpose interface.”


D 	DIP 	

Dependency inversion principle
    the notion that one should “Depend upon Abstractions. Do not depend upon concretions.”
    Dependency injection is one method of following this principle.

http://en.wikipedia.org/wiki/Solid_(object-oriented_design)
http://www.code-magazine.com/article.aspx?quickid=1001061
[Overview]   [Single responsibility principle]   [Open/closed principle]   [Liskov substitution principle]   [Interface segregation principle]   [Dependency inversion principle]