Haskell is an advanced, purely functional programming language. It is statically typed, lazily evaluated, and features a strong type-inference engine.
- Pure Functions: Referential transparency, lack of side effects.
- Type System: Strong static types, type classes, type inference.
- Lazy Evaluation: Call-by-need valuation, infinite data structures.
- Monadic IO: Managing state and input/output cleanly in a pure functional environment.