About Me
Top Posts
-
Recent Posts
Categories
- Adaptable Design
- Agile
- Antifragility
- AOP
- Cloud Computing
- Data Mining
- Data Science
- Design Patterns
- Efficacy
- Gamification
- Hiring
- IASA Israel
- Israel
- Jewish Sources
- KashKlik
- Lean Development
- Machine Learning
- OOD
- OOP
- Programming
- Psychology of Programming
- Recommender Systems
- Refactoring
- Requirements Specification
- Research
- Social Networks
- Software Architecture
- Software Engineering
- Software Evolution
- Software Quality
- Software Reuse
- Startups
- TDD
- Technical Debt
- Technical Savings
- Web Development
- Yahoo!
Tag Cloud
- ADUF
- Agile
- Antifragility
- AOP
- Architecture
- Cloud
- Data Mining
- Data Science
- Design Patterns
- Efficacy
- Evolution
- Gamification
- Hiring
- IASA
- Israel
- Jewish
- KashKlik
- Lean
- Machine Learning
- OOD
- OOP
- Programming
- Psychology
- Quality
- Recommender Systems
- Refactoring
- Requirements
- Research
- Social
- Software Engineering
- Software Reuse
- Startups
- TDD
- Technical Debt
- Web
- Yahoo!
Archives
- December 2020
- November 2020
- October 2020
- September 2020
- August 2020
- July 2020
- June 2020
- May 2020
- April 2020
- March 2020
- February 2020
- January 2020
- December 2019
- November 2019
- October 2019
- September 2019
- August 2019
- July 2019
- June 2019
- May 2019
- April 2019
- March 2019
- February 2019
- January 2019
- December 2018
- September 2018
- July 2018
- June 2018
- May 2018
- April 2018
- March 2018
- February 2018
- January 2018
- December 2017
- November 2017
- October 2017
- September 2017
- August 2017
- July 2017
- June 2017
- May 2017
- April 2017
- March 2017
- February 2017
- January 2017
- December 2016
- November 2016
- October 2016
- September 2016
- August 2016
- July 2016
- June 2016
- May 2016
- April 2016
- March 2016
- February 2016
- January 2016
- December 2015
- November 2015
- October 2015
- September 2015
- August 2015
- July 2015
- June 2015
- May 2015
- April 2015
- March 2015
- February 2015
- January 2015
- December 2014
- November 2014
- October 2014
- September 2014
- August 2014
- July 2014
- June 2014
- May 2014
- April 2014
- March 2014
- February 2014
- January 2014
- December 2013
- November 2013
- October 2013
- September 2013
- August 2013
- July 2013
- June 2013
- May 2013
- April 2013
- March 2013
- February 2013
- January 2013
- December 2012
- November 2012
- October 2012
- September 2012
- August 2012
- July 2012
- June 2012
- May 2012
- April 2012
- March 2012
- February 2012
- January 2012
- December 2011
- November 2011
- October 2011
- September 2011
- August 2011
- July 2011
- June 2011
- May 2011
- April 2011
- March 2011
- February 2011
- January 2011
- December 2010
- November 2010
- October 2010
- September 2010
Blogroll
Blog Stats
- 503,789 hits
Meta
Category Archives: OOD
Divide-and-Conquer: Coping with Complexity
Sometimes a problem is simply too complex for us to solve. Our only chance seems to be breaking it into smaller parts that we know how to deal with. This strategy of reducing the complexity of a problem by dividing … Continue reading
Inheritance and the Power of Abstraction
Programming is an exercise in abstraction. If a program is intended to solve some problem, we must first be able to model this problem in an abstract way, in order to express it in a programming language. Only after the … Continue reading
Effective Software Reuse
For many years Software Reuse has been seen as a solution to both reduce the costs of software development and improve the quality of the systems being developed. However, in practice, most companies today have the feeling that they are … Continue reading
Identifying Anti-Patterns
In my previous post, I’ve discussed the importance of identifying domain-specific Design Patterns in an organization. Equally important is the need to identify Anti-Patterns. This is the definition of Anti-Patterns from Wikipedia: “An anti-pattern is a pattern that may be … Continue reading
Collecting Design Patterns
Today we expect every professional Software Engineer to have a good knowledge of Design Patterns. In particular, the names of the patterns in the Gang-of-Four (GoF) book became part of the common vocabulary of software developers. Any good programmer should … Continue reading
Effective Design Reviews
This is the definition of Design Review from Wikipedia: “A design review is a process whereby a design is tested against its requirements prior to implementation.” There are at least two problems with this definition: The first problem is that … Continue reading
The Liskov Substitution Principle and Test-Driven Development
The Substitution Principle, first defined by Barbara Liskov, says that: “Let q(x) be a property provable about objects x of type T. Then q(y) should be true for objects y of type S where S is a subtype of T.” … Continue reading
When a square is not a rectangle
In my previous post, I’ve used the example of squares and rectangles to illustrate the importance of definitions. It is clear that, from a geometric point-of-view, a square is indeed a kind of rectangle. However, as my friend Arnon has … Continue reading
Is a square a rectangle? – On the importance of definitions
Before you continue reading this post, please answer the following question: “Is a square a rectangle?” This is apparently a very simple question, to which we should be able to answer almost immediately, without even thinking about it. However, if … Continue reading