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A domain-specific language (DSL) is a usually small language for a dedicated domain with its own unique appearance and rules for composition. Haskell has a very flexible syntax, and offers higher-order functions. Therefore, we can often mimic the visual style of a particular domain directly within the language, yielding an embedded DSL.
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Haskell for embedded domain-specific languages
Andres Löh is a Haskell consultant and co-owner of Well-Typed LLP. He is based in Regensburg, Germany. He started using Haskell in 1997, when being an undergraduate student of mathematics in Konstanz and has been an enthusiastic functional programmer ever since. Andres obtained a PhD in Computer Science from Utrecht University in 2004, on extending the Haskell language with capabilities for datatype-generic programming. After having been a university lecturer for several years, he joined Well-Typed in 2010.