YERK(ID:1189/yer001)

named after the Yerkes Observatory, an OOL based on a FORTH kernel with some major modifications. Originally known as NEON, developed and sold as a product by Kriya Systems from 1985-89. Several people from University of Chicago have maintained YERK since it's demise as a product. Because of possible Trademark conflict, they named it YERK.

from Rodriguez & Poehlman:
Neon was a commercial OOF, modeled after Smalltalk; when released into the public domain it was renamed Yerk. The object is not executed; it is parsed by the message word, which invokes or compiles the method. Added data structures include: class definition header, class list, method list, method stack, and object stack. Objects are statically allocated, but dynamically allocated memory can be "cast" as objects.


Structures:
Related languages
Neon => YERK   Evolution of
References:
  • Grehan, Rick. "Yerk Comes to the PC." Forth Dimensions 13(5) (January- February 1992) pp.6-18 view details
  • Bradford J. Rodriguez & W. F. S. Poehlman "A Survey of Object-Oriented Forths" view details
          in SIGPLAN Notices 31(04) April 1996 view details