No abstract

Haskell has proved itself to be a suitable implementation language for large software projects. Nevertheless, surprisingly few graphical end-user applications have been written in Haskell. Based on our experience with the development of the Bayesian network toolbox Dazzle, we argue that the language is indeed very well suited for writing such applications. Popular language features, such as higher-order functions, laziness, and light syntax for data structures, turn out to hold their ground in a large interactive end-user application. Haskell, combined with the truly platform-independent GUI library wxHaskell, is ready for building real-world applications.