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Modules, Abstract Types, and Distributed Versioning

Peter Sewell Cambridge Computing Laboratory 4pm, Tuesday 8 May 2001 Room 2511, JCMB, King's Buildings

In a wide-area distributed system it is often impractical to synchronise software updates, so one must deal with many coexisting versions. This talk will be about static typing support for modular wide-area programming, modelling separate compilation/linking and execution of programs that interact along typed channels. Interaction may involve communication of values of abstract types, so developers need fine-grain versioning control of these types to support interoperation of old and new code.

This is all made precise in terms of a second-class module system with singleton kinds, with a novel operational semantics for separate compilation/linking and execution.

Paper available at

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