Haskell overview

Haskell is a purely functional, lazy-evaluated, statically-typed language with an expressive Hindley-Milner type system and type classes. It treats all I/O and side effects through monads, making the boundary between pure and effectful code explicit. Haskell excels in compiler and language tooling, formal verification adjacent work, and domains where algebraic abstractions (functors, monoids, traversables) provide architectural clarity. The GHC compiler includes advanced features such as type families, GADTs, linear types, and Template Haskell. Libraries like servant (type-safe APIs), conduit (streaming), and optics are widely used in production code.