Sunday, August 30, 2009

Liskov substitution principle

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.

http://en.wikipedia.org/wiki/Liskov_substitution_principle

12 comments:

Vishy Ranganath said...

Put another way so that non-architects can understand:

An object should be substitutable by any of its descendants anywhere in an application without causing unexpected behaviors. :-)

Bala Dutt said...

yep! :-)

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