OPUS: a formal approach to object-orientation [chapter]

Tom Mens, Kim Mens, Patrick Steyaert
1994 Lecture Notes in Computer Science  
OPUS is an elementary calculus that models object-orientation. It expresses in a direct way the crucial features of object-oriented programming such as objects, encapsulation, message passing and incremental modification. This is illustrated by numerous examples. Thanks to the way objects are constructed in this calculus, we can deal with selfreference, recursion and even mutual recursion in a straightforward way. We also illustrate that it is relatively easy to model different kinds of
more » ... nce mechanisms. Finally, we argue to which extent our calculus can be used for modeling and investigating object-oriented concepts.
doi:10.1007/3-540-58555-9_103 fatcat:zk766ken25fs3cg4jxgvg3k6hi