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- W2395385118 abstract "Applicative models are interesting alternatives to the von Neumann model for designing new computer systems. However, applicative models have several problem areas which must be removed before they are really viable alternatives to the von Neumann approach. One such problem area is the handling of and recovery from exceptions caused by a program in execution.This dissertation presents an exception handling and recovery model based upon the following principles: (1) the preservation of the semantic base of the applicative system, even in the presence of exception conditions; (2) the definition of an value; (3) the avoidance of non-terminating computations caused by the presence of exception conditions; and (4) the definition of distinguishing syntax for exception handling so that exception handling is distinct from the normal program flow.These principles are examined in detail within the context of two applicative systems: FP, an applicative language developed by John Backus, and Id, a dataflow language developed by Arvind, Kim Gostelow, and Wil Plouffe. It is shown that the model combines the expressive power of both a forward error recovery model and a backward error recovery model for von Neumann systems. However, the recovery system for applicative models is both simpler to understand and to implement than a recovery system for a von Neumann system.Finally, the basic model is extended for dataflow streams. Each stream has an associated error status which is manipulated separately from the stream element values. This extension preserves the asynchrony present in stream computations." @default.
- W2395385118 created "2016-06-24" @default.
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- W2395385118 date "1980-01-01" @default.
- W2395385118 modified "2023-09-23" @default.
- W2395385118 title "Exception handling and recovery in applicative systems" @default.
- W2395385118 hasPublicationYear "1980" @default.
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