What is DRY (Don't Repeat Yourself)?
A principle that says every piece of knowledge in your code should have a single, unambiguous source of truth.
Why It Matters
DRY code is easier to maintain because changes only need to be made in one place.
Real-World Example
Creating a shared validation function instead of writing the same email validation logic in five different places.
“Understanding terms like DRY (Don't Repeat Yourself) matters because it helps you have better conversations with developers and make smarter decisions about your software. You do not need to be technical. You just need to know enough to ask the right questions.”
Related Terms
Refactoring
Improving existing code's structure and clarity without changing what it does
SOLID Principles
Five design principles that help developers write code that is easier to maintain, extend, and understand.
Design Patterns
Reusable solutions to common software design problems that have been proven to work well.
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Related Terms
Refactoring
Improving existing code's structure and clarity without changing what it does
Design Patterns
Reusable solutions to common software design problems that have been proven to work well.
SOLID Principles
Five design principles that help developers write code that is easier to maintain, extend, and understand.
Full-stack
Working on both the frontend (what users see) and backend (the server and database) of an application
TypeScript
JavaScript with added type checking that catches errors before your code runs
JavaScript
The programming language that makes websites interactive and dynamic