Don't Repeat Yourself (DRY)

Supports Pillars:

Technical excellence

Dependencies on Other Skills:

Refactoring

Single Responsibility Principle (SRP)

Definition:

Every piece of knowledge must have a single unambiguous, authoritative representation within a system.

Triggers:

We apply the DRY principle to:

• Remove multiple representations of information.

• Remove unintended duplication from our designs.

• Remove "copy and paste" code.

• Foster code reuse.

Forces:

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Organizational Support of this Skill:

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Resources:

The Pragmatic Programmer / Hunt & Thomas