CSC/ECE 517 Fall 2009/wiki3 5 SD: Difference between revisions
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The Dependency Inversion Principle(DIP) states that: | The Dependency Inversion Principle(DIP) states that: | ||
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1. High-level modules should not depend on low-level modules. Both should depend on [http://en.wikipedia.org/wiki/Abstraction_(computer_science) abstractions]. | 1. High-level modules should not depend on low-level modules. Both should depend on [http://en.wikipedia.org/wiki/Abstraction_(computer_science) abstractions]. | ||
2. Abstractions should not depend upon details. Details should depend upon abstractions. | 2. Abstractions should not depend upon details. Details should depend upon abstractions. | ||
</p> | |||
Revision as of 21:44, 11 November 2009
Dependency inversion principle
The Dependency Inversion Principle(DIP) states that:
1. High-level modules should not depend on low-level modules. Both should depend on abstractions. 2. Abstractions should not depend upon details. Details should depend upon abstractions.