Continuation-based Web servers provide advantages over traditional Web application development through the increase of expressive power they allow. This leads to fewer errors and more productivity for the programmers ...
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ISBN:
(纸本)9781450302036
Continuation-based Web servers provide advantages over traditional Web application development through the increase of expressive power they allow. This leads to fewer errors and more productivity for the programmers that adopt them. Unfortunately, existing implementation techniques force a hard choice between scalability and expressiveness. Our technique allows a smoother path to scalable, continuation-based Web programs. We present a modular program transformation that allows scalable Web applications to use third-party, higher-order libraries with higher-order arguments that cause Web interaction. Consequently, our system provides existing Web applications with more scalability through significantly less memory use than the traditional technique.
Two important problems of object-oriented reuse are the propagation of design and implementation specifics of the base software to the inheritors, and the protection of the inheritors against changes in the base softw...
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Two important problems of object-oriented reuse are the propagation of design and implementation specifics of the base software to the inheritors, and the protection of the inheritors against changes in the base software. In this paper, we argue that the simple inheritance rules of existing object-oriented languages are not sufficient for properly dealing with these problems. In the proposal presented in this paper, programmers are enabled to make metalevel declarations of the internal protocols and dependencies of their classes. Additionally, changes of the base module are automatically monitored to filter out information about the alterations that may invalidate already existing inheritors. Based on these informations, the subclassing semantics is adjusted such that the maintenance of the base module properties and the protection of the inheritor is ensured during their integration. In this way, language support is provided for keeping the behavior of reusable software consistent during its evolution.
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