OPAL (OPtimized Applicative Language) is a functional programming language first developed at Technische Universität Berlin.

There is a later framework for static code analysis also called Opal.

Example program

This is an example OPAL program, which calculates the GCD recursively.

Signature file (declaration)

Implementation file (definition)

External links

  • , archived, last modified 30 September 2010.
  • , archived.