--- title: SOLID - The Simple Way To Understand | daily.dev description: This post explains the SOLID principles in a simple way using Typescript examples. It covers the Single Responsibility Principle, Open-Closed Principle, Liskov... canonical: https://daily.dev/posts/nlvnv8pvi twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: SOLID - The Simple Way To Understand | daily.dev og:description: This post explains the SOLID principles in a simple way using Typescript examples. It covers the Single Responsibility Principle, Open-Closed Principle, Liskov... og:url: https://daily.dev/posts/nlvnv8pvi og:image: https://api.daily.dev/og/posts/nlVnV8pVi.png og:image:alt: Post cover image 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. # SOLID - The Simple Way To Understand **[WebCraft](https://daily.dev/sources/webcraft)** · [@mouad_dadda](https://daily.dev/mouad_dadda) · 359 upvotes · 4 comments ## Summary This post explains the SOLID principles in a simple way using Typescript examples. It covers the Single Responsibility Principle, Open-Closed Principle, Liskov Substitution Principle, Interface Segregation Principle, and Dependency Inversion Principle. ## 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. **@a\_meb\_a** · 4 upvotes > uncle Bob's legacy **@sondo** · 0 upvotes > Wow, easy to understand! **@nafan** · 0 upvotes > It's good to refresh these concepts. Thanks. **@gpfc** · 0 upvotes >  --- Tags: [#architecture](https://daily.dev/tags/architecture), [#general-programming](https://daily.dev/tags/general-programming), [#typescript](https://daily.dev/tags/typescript) [View this post on daily.dev](https://daily.dev/posts/nlvnv8pvi) ```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":"DiscussionForumPosting","mainEntityOfPage":"https://daily.dev/posts/nlvnv8pvi","headline":"SOLID - The Simple Way To Understand","text":"Shared: SOLID - The Simple Way To Understand","url":"https://daily.dev/posts/nlvnv8pvi","datePublished":"2025-02-02T10:43:25.369Z","dateModified":"2026-03-15T06:32:24.178Z","author":{"@type":"Person","name":"Mouad Dadda","url":"https://daily.dev/mouad_dadda","image":"https://media.daily.dev/image/upload/s--qvecFxpC--/f_auto/v1746013117/avatars/avatar_cmPs2DO0hyj5zVizDLJDZ","description":"🚀 Full Stack Developer💡 Passionate about contributing to open-source projects","interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"EndorseAction"},"userInteractionCount":24670}},"image":"https://media.daily.dev/image/upload/s--VDukGCjf--/f_auto/v1722860399/public/Placeholder%2002","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":359},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":4}],"sharedContent":{"@type":"WebPage","url":"https://api.daily.dev/r/cjQU7biNT"},"comment":[{"@type":"Comment","text":"uncle Bob’s legacy","datePublished":"2025-02-27T01:39:35.455Z","url":"https://daily.dev/posts/nlVnV8pVi#c-VxQJPYDgM","author":{"@type":"Person","name":"Phillippe Michel Weir","url":"https://daily.dev/a_meb_a","image":"https://media.daily.dev/image/upload/s--BwH-uTMq--/f_auto/v1740136991/avatars/avatar_N403VFK9lAHNRwlSAhl1h"},"interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":4}},{"@type":"Comment","text":"Wow, easy to understand!","datePublished":"2025-02-27T10:14:10.071Z","url":"https://daily.dev/posts/nlVnV8pVi#c-d8rH4Uxux","author":{"@type":"Person","name":"Son Do","url":"https://daily.dev/sondo","image":"https://media.daily.dev/image/upload/s--tNaBl7mw--/f_auto/v1750044631/avatars/avatar_hM3cTU8huU33LriCTlP0A?_a=BAMClqUq0"}},{"@type":"Comment","text":"It’s good to refresh these concepts. 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