Idris
Idris is a purely functional programming language with dependent types, designed for general-purpose development with a strong emphasis on correctness and verification. It allows developers to encode invariants and properties directly into types, enabling compile-time guarantees about program behavior. The language supports interactive theorem proving and is often used for writing high-assurance software and formal verification.
Developers should learn Idris when building systems where correctness is critical, such as in safety-critical applications, financial systems, or cryptographic protocols, as dependent types help eliminate entire classes of bugs at compile time. It is also valuable for academic research in programming language theory and for developers interested in advanced type systems to improve code reliability. Use cases include formal verification of algorithms, developing domain-specific languages with enforced properties, and teaching concepts of dependent types and theorem proving.