【摘要】 对象程序设计是一种引人注目的程序设计方法学,其主要特点是支持数据抽象。继承性的引入大大削弱了对象语言的封装优点。本文考察及分析了对象语言中封装和继承性间的相互关系,介绍了在Dual系统83/20用NIT-PROLOG开发的对象程序设计语言OOLPS中为支持具有继承性的封装所采纳的方案。最后阐述了OOLPS的多继承性的处理思想。更多还原

【Abstract】 Object-oriented programming is one of the most important methodologies in 1980’s. Its main characteristic is the support to data abstraction. The introduction of inheritance makes the advantages of encapsulation severely weakened in most object-oriented programming languages. This paper introduces the scheme that we adopt to support the encapsulation with inheritance in the OOLPS, which is developed on Dual system 83/20, and demonstrates the use of OOLPS.更多还原