--- title: 7 learnings from Anders Hejlsberg: The architect behind... description: Anders Hejlsberg, creator of Turbo Pascal, C#, and TypeScript, shares insights on building enduring programming languages. Key lessons include prioritizing... canonical: https://daily.dev/posts/7-learnings-from-anders-hejlsberg-the-architect-behind-c-and-typescript-yexgvapp3 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: 7 learnings from Anders Hejlsberg: The architect behind C# and TypeScript | daily.dev og:description: Anders Hejlsberg, creator of Turbo Pascal, C#, and TypeScript, shares insights on building enduring programming languages. Key lessons include prioritizing... og:url: https://daily.dev/posts/7-learnings-from-anders-hejlsberg-the-architect-behind-c-and-typescript-yexgvapp3 og:image: https://api.daily.dev/og/posts/YeXGVApP3.png og:image:alt: 7 learnings from Anders Hejlsberg: The architect behind C# and TypeScript 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. # 7 learnings from Anders Hejlsberg: The architect behind C# and TypeScript **[GitHub Blog](https://daily.dev/sources/ghblog)** · 9 min read · 0 upvotes · 0 comments ## Summary Anders Hejlsberg, creator of Turbo Pascal, C#, and TypeScript, shares insights on building enduring programming languages. Key lessons include prioritizing fast feedback loops over elegance, accommodating team-scale development by letting go of personal preferences, extending existing ecosystems rather than replacing them, making open source decisions visible, choosing pragmatic implementation languages when performance demands it, using type systems as guardrails for AI-generated code, and maintaining institutional memory through public collaboration. These patterns have guided successful language design across four decades. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#open-source](https://daily.dev/tags/open-source), [#typescript](https://daily.dev/tags/typescript), [#c#](https://daily.dev/tags/c#), [#language-design](https://daily.dev/tags/language-design) [View this post on daily.dev](https://daily.dev/posts/7-learnings-from-anders-hejlsberg-the-architect-behind-c-and-typescript-yexgvapp3) ```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":"7 learnings from Anders Hejlsberg: The architect behind C# and TypeScript","url":"https://daily.dev/posts/7-learnings-from-anders-hejlsberg-the-architect-behind-c-and-typescript-yexgvapp3","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/7-learnings-from-anders-hejlsberg-the-architect-behind-c-and-typescript-yexgvapp3"},"datePublished":"2026-01-27T17:20:13.472Z","dateModified":"2026-01-27T17:20:34.538Z","description":"Anders Hejlsberg, creator of Turbo Pascal, C#, and TypeScript, shares insights on building enduring programming languages. 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