Opal (programming language)
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This article is about the functional programming language. For the Ruby interpreter, see Ruby (programming language) § Alternative implementations.
OPAL (OPtimized Applicative Language)[1] is a functional programming language first developed at Technische Universität Berlin.
There is a later framework for static code analysis also called Opal.[2]
Example program
[edit ]This is an example OPAL program, which calculates the GCD recursively.
- Signature file (declaration)
SIGNATURE GCD FUN GCD: nat ** nat -> nat
- Implementation file (definition)
IMPLEMENTATION GCD IMPORT Nat COMPLETELY DEF GCD(a,b) == IF a % b = 0 THEN b ELSE IF a-b < b THEN GCD(b,a-b) ELSE GCD(a-b,b) FI FI
References
[edit ]- ^ "Opal". TU-Berlin/opal - Optimized Applicative Language. Retrieved 2023年09月23日.
- ^ "Home page". OPAL Project. Retrieved 2023年11月25日.
External links
[edit ]- The OPAL Home Page, archived, last modified 30 September 2010.
- OPAL Installation Guide, archived.
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