Software maintenance accounts for a large portion of the software development cost, particularly the process of updating programs either to adapt for requirement change or to enhance design or efficiency. Currently, program updates are generally performed manually by programmers using text editors. This is an unreliable
method because syntax and...
The structure of monadic functional programs allows the integration of many different features into such programs by just changing the definition of the monad and not the program, which is a desirable feature from a software engineering and maintenance point of view. We describe an algorithm for the automatic transformation...
Many software maintenance problems are caused by using text editors to change programs. A more systematic and reliable way of performing program updates is to express changes with an update language. In particular, updates should preserve the syntax- and type-correctness of the transformed object programs. We describe an update calculus...