# Anders Hejlsberg

> Danish software engineer (born 1960)

**Wikidata**: [Q316544](https://www.wikidata.org/wiki/Q316544)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Anders_Hejlsberg)  
**Source**: https://4ort.xyz/entity/anders-hejlsberg

## Summary
Anders Hejlsberg is a Danish software engineer and systems architect best known for creating the Turbo Pascal compiler and leading the development of the C# programming language at Microsoft. Born in 1960, he has been a key figure in the evolution of modern programming languages and development tools.

## Biography
- Born: December 2, 1960, Copenhagen, Denmark
- Nationality: Danish
- Education: Technical University of Denmark
- Known for: Creating Turbo Pascal, Delphi, and C# programming languages
- Employer(s): Microsoft (current), Borland (former)
- Field(s): Software engineering, programming language design

## Contributions
Anders Hejlsberg created Turbo Pascal in 1983, a revolutionary integrated development environment and compiler that made Pascal programming accessible and fast on personal computers. At Borland, he led the development of Delphi, an object-oriented Pascal-based visual development environment launched in 1995. Joining Microsoft in the 1990s, he became the chief architect of C#, a modern object-oriented programming language introduced in 2000 as part of the .NET framework. He also created TypeScript, a typed superset of JavaScript that compiles to plain JavaScript, released in 2012. His work has shaped how millions of developers write software, with C# becoming one of the most popular programming languages and TypeScript gaining widespread adoption for large-scale JavaScript development.

## FAQs
### Q: What programming languages did Anders Hejlsberg create?
A: Anders Hejlsberg created Turbo Pascal, Delphi, C#, and TypeScript. Turbo Pascal was his first major creation in 1983, followed by Delphi in 1995, C# in 2000, and TypeScript in 2012.

### Q: Where does Anders Hejlsberg currently work?
A: Anders Hejlsberg currently works at Microsoft as a Technical Fellow, where he has been employed since the 1990s and serves as the chief architect of C#.

### Q: What is Anders Hejlsberg's educational background?
A: Anders Hejlsberg studied at the Technical University of Denmark, though he did not complete his degree before beginning his professional career in software development.

## Why They Matter
Anders Hejlsberg's impact on software development is profound and lasting. His creation of Turbo Pascal democratized Pascal programming and set new standards for compiler speed and IDE usability. Delphi brought visual development and object-oriented programming to a wide audience, influencing later development environments. C# has become one of the world's most popular programming languages, powering enterprise applications, games, and web services through the .NET ecosystem. TypeScript has transformed how developers approach large-scale JavaScript projects by adding static typing and modern language features. His work consistently bridges the gap between academic language design and practical developer needs, making powerful tools accessible to millions of programmers worldwide.

## Notable For
- Created Turbo Pascal, the first integrated development environment for Pascal
- Led development of Delphi, a pioneering visual development environment
- Chief architect of C#, one of the most popular modern programming languages
- Created TypeScript, a typed superset of JavaScript used by major tech companies
- Recipient of the 2014 IT Award for his contributions to software development

## Body
### Early Career and Turbo Pascal
Anders Hejlsberg began his career in Denmark, where he created Turbo Pascal as a 22-year-old software developer. The compiler was revolutionary for its time, offering compilation speeds that were orders of magnitude faster than existing solutions. Turbo Pascal's integrated development environment combined editor, compiler, and debugger into a single package, establishing a model that would become standard for software development tools.

### Borland Years and Delphi
At Borland International, Hejlsberg led the development of Delphi, released in 1995. Delphi was a visual rapid application development environment that used Object Pascal and provided visual component-based design. It was particularly successful for Windows application development and influenced later development environments with its visual designer and component library approach.

### Microsoft and C#
Joining Microsoft in the 1990s, Hejlsberg became the chief architect of C#, a modern, object-oriented programming language designed for the .NET framework. C# combined the performance of compiled languages with the productivity features of modern development tools. The language has evolved significantly since its 2000 introduction, adding features like LINQ, async/await, and nullable reference types, and has become one of the most widely used programming languages globally.

### TypeScript and Modern Web Development
In 2012, Hejlsberg created TypeScript, a statically typed superset of JavaScript that compiles to plain JavaScript. TypeScript addressed the challenges of building large-scale applications with JavaScript by adding optional static typing, classes, and modern language features. It has been adopted by major companies including Microsoft, Google, and Facebook, and has become a standard tool in modern web development.

### Technical Leadership and Philosophy
Throughout his career, Hejlsberg has demonstrated a consistent philosophy of making powerful programming tools accessible and practical for developers. His languages and tools emphasize productivity, performance, and ease of use while incorporating modern programming concepts. He has been a frequent speaker at developer conferences and has influenced the direction of software development through both his technical contributions and his leadership in the developer community.

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## References

1. Integrated Authority File
2. International Standard Name Identifier
3. Virtual International Authority File
4. Freebase Data Dumps. 2013
5. GitHub
6. IdRef
7. OpenAlex