Get better at programming through fun, rewarding coding exercises that test your understanding of concepts with Exercism.
Implement the classic method for composing secret messages called a square code.
Calculate the number of grains of wheat on a chessboard given that the number on each square doubles.
Create an implementation of the atbash cipher, an ancient encryption system created in the Middle East.
Pure functions always produce the same output for the same input, so are more predictable.
Lazy evaluation only provides results as needed, allowing for infinite data structures.
Strong, static types mean more errors are caught before the program is run.
Automatic inference of types makes the code lighter and the developer more productive.
Categorising types into classes provides type-safe overloading.
Powerful data types provide a high degree of convenience and safety.
Every language has its own way of doing things. Haskell is no different. Our mentors will help you learn to think like a Haskell developer and how to write idiomatic code in Haskell. Once you've solved an exercise, submit it to our volunteer team, and they'll give you hints, ideas, and feedback on how to make it feel more like what you'd normally see in Haskell - they'll help you discover the things you don't know that you don't know.Learn more about mentoring
The Haskell track on Exercism has 100 exercises to help you write better code. Discover new exercises as you progress and get engrossed in learning new concepts and improving the way you currently write.See all Haskell exercises
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