Write functional Haskell programs in the cloud, no local GHC needed.
Start coding free →Haskell is a statically typed functional language with an expressive type system, lazy evaluation, and a firm emphasis on immutability and purity. Types are checked at compile time, which helps catch errors early and makes large codebases easier to reason about. It is used in finance, data analysis, and software development, and handles problems that require high concurrency or parallelism well.
Open a Haskell workspace →Haskell's type system lets you express complex type relationships and constraints directly in code. This keeps programs well-structured and surfaces mismatches before they reach runtime. Lazy evaluation means expressions are computed only when their results are needed. GHC, the standard compiler, generates efficient native binaries and supports a rich set of language extensions.
To run a Haskell script on RunCode, use runghc for quick interpreter-mode execution. To compile a program to a native binary, use ghc with the -o flag and run the output directly.