In software engineering, don’t repeat yourself (DRY) is a principle of software development. The DRY principle is stated as "Every piece of knowledge must have a single, unambiguous, authoritative representation within a system." The principle has been formulated by AndyHunt and DaveThomas? in their book ThePragmaticProgrammer.

References

• ​Wikipedia - Don't repeat yourself
• ​3 Key Software Principles You Must Understand
• ​InfoQ - Using DRY: Between Code Duplication and High-Coupling

See Also

• SoftwareDesignPrinciples