面向对象可复用软件设计思想分析

软件复用技术是有效利用已有的软件资源，提高软件开发效率，降低开发成本的技术．但是如何才能设计出一个可以复用的软件，这是我们大家都很关心的问题，Erich Gamma博士在这方面进行了有益的尝试，他的研究方法是总结前人在面向对象软件开发过程中所积累的经验，即模式，但是模式是如何总结出来的，在总结模式时，或者说在设计可复用的软件时应该如何思考问题，这比总结模式本身更重要．本文主要从软件复用的关键——隔离变化入手，深入探讨和分析了面向对象的软件系统构造过程中可能发生变化的点，并给出了屏蔽这些变化点的方法，并提出了一个设计面向对象可复用软件的新的可操作的思路、

Analysis in Designing Object-oriented Reusable Software

Software reuse technology is a technology of making use of the existing software resource, promoting the efficiency of the software developing, reducing costing of developing. But, how to design a reusable software, that is our concerned problem. Dr. Erich Gamma has research the problem, his method emphasizes the summarizing of ancestors' experience in developing object-oriented software developing, that is pattern. However how to summarize the pattern, and when summarize the pattern, on the other hand, when design the reusable software, how to think the problem, it is more important than patterns itself. The paper start at the key of software reusable-insulate vary, discuss and analysis the vary point in developing the object-oriented software deeply, and propose the method shielding vary, the end we propose the clue of designing the object-oriented reusable software.