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Os Peytonjones
The document discusses the functional programming language Haskell. It notes that Haskell is a purely functional, lazy, higher-order, strongly typed general purpose language. It states that functional programming focuses on values rather than state, and that learning Haskell can help programmers think differently even when using other mainstream languages. It provides examples of Haskell code for a simple window manager application and discusses concepts like data types, pattern matching, and property-based testing in Haskell.
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