Haskell Brain Teasers

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Haskell Brain Teasers: Exercise Your Mind

Employ powerful techniques and recognize common pitfalls as you solve fiendish Haskell puzzles across five different topic areas.

Don’t sleep on the lazy evaluation puzzles: they’ll challenge you to predict the behavior of programs that rely on laziness in unexpected ways. Think syntax and language extensions puzzles should be easy? Think again as you deal with the perversity of the unary minus operator, and puzzles based on new extensions such as QualifiedDo. Prepare to be perplexed with Type Class puzzles on ad hoc polymorphism, deriving strategies, and record fields. Want more? Try mixing classic ambiguous type puzzles with advanced new features like linear types. Want to read and debug more esoteric code and exotic language features? Then take on the Libraries puzzles, designed to challenge beginner and advanced readers as you peer into lenses, step into STM, and test the limits of your understanding with the singletons library.

After trying your hand at each puzzle, read through the solution to get more insight into key Haskell features, and use the references to build a reading list to dive deeper into new areas of the language.

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