Monthly Archives: October 2010

Effective Design Reviews

Posted on October 24, 2010 by Hayim Makabee

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 →

Posted in OOD, Software Architecture | Tagged , | 4 Comments

The Liskov Substitution Principle and Test-Driven Development

Posted on October 5, 2010 by Hayim Makabee

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 →

Posted in OOD, OOP, TDD | Tagged , , | 3 Comments