DRY Principle in 100 Seconds

💡 What does DRY stand for?

DRY stand for Don't Repeat Yourself, a basic principle of software development aimed at reducing repetition of information.

👤 Origination

The principle has been formulated by Andy Hunt and Dave Thomas in their book The Pragmatic Programmer. It is stated as "Every piece of knowledge must have a single, unambiguous, authoritative representation within a system".

⭐ Why DRY?

• Write code once, use it often.
• Change code in one place, see the change in all instances.
• Less code is good: It saves time and effort, is easy to maintain, and also reduces the chances of bugs.

DRY Violations

• Writing/ Copying and pasting the same code or logic again and again.

💡 How to DRY?

• Divide your code and logic into smaller reusable units and use that code by calling it where you want.
• Put business rules, long expressions, if statements, math formulas, metadata, etc. in only one place.

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📰 Others

Be interested? 😃 You can visit the links below read my other posts in my programming principles series

• Single Responsibility Principle (SRP) in 100 Seconds
• YAGNI Principle in 100 Seconds
• KISS Principle in 100 Seconds