--- title: Software design principles: DRY | daily.dev description: DRY stands for Don't Repeat Yourself, meaning you shouldn't type code more than once. The principle states: "Every piece of logic must have a single... canonical: https://daily.dev/posts/software-design-principles-dry-awl4emdus twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Software design principles: DRY | daily.dev og:description: DRY stands for Don't Repeat Yourself, meaning you shouldn't type code more than once. The principle states: "Every piece of logic must have a single... og:url: https://daily.dev/posts/software-design-principles-dry-awl4emdus og:image: https://api.daily.dev/og/posts/awL4eMDuS.png og:image:alt: Software design principles: DRY og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Software design principles: DRY **[Hashnode](https://daily.dev/sources/hashnode)** · [@dailydevtips](https://daily.dev/dailydevtips) · 1 min read · 31 upvotes · 6 comments ## Summary DRY stands for Don't Repeat Yourself, meaning you shouldn't type code more than once. The principle states: "Every piece of logic must have a single unambiguous representation within a system" I'm going to demonstrate some simple use-cases, but they should give you a good understanding of what DRY means. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@dailydevtips** · 1 upvotes > Such a DRY article 😂 **@kievandres** · 0 upvotes > Nice post! --- Tags: [#general-programming](https://daily.dev/tags/general-programming) [View this post on daily.dev](https://daily.dev/posts/software-design-principles-dry-awl4emdus) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Software design principles: DRY","url":"https://daily.dev/posts/software-design-principles-dry-awl4emdus","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/software-design-principles-dry-awl4emdus"},"datePublished":"2020-11-16T06:22:24.667Z","dateModified":"2021-10-07T14:17:10.317Z","description":"DRY stands for Don't Repeat Yourself, meaning you shouldn't type code more than once. 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