2019
Lazy Stream Programming in Prolog
Publication
Publication
In recent years, stream processing has become a prominent approach for incrementally handling large amounts of data, with special support and libraries in many programming languages. Unfortunately, support in Prolog has so far been lacking and most existing approaches are ad-hoc. To remedy this situation, we present lazy stream generators as a unified Prolog interface for stateful computations on both finite and infinite sequences of data that are produced incrementally through I/O and/or algorithmically. We expose stream generators to the application programmer in two ways: 1) through an abstract sequence manipulation API, convenient for defining custom generators, and 2) as idiomatic lazy lists, compatible with many existing list predicates. We define an algebra of stream generator operations that extends Prolog via an embedded language interpreter, provides a compact notation for composing generators and supports moving between the two isomorphic representations. As a special instance, we introduce answer stream generators that encapsulate the work of corou- tining first-class logic engines and support interoperation between forward recursive AND-streams and backtracking-generated OR-streams.
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| , , , , , | |
| doi.org/10.48550/arXiv.1907.11354 | |
| International Conference on Logic Programming | |
| Organisation | Human-Centered Data Analytics |
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Tarau, P., Wielemaker, J., & Schrijvers, T. (2019). Lazy Stream Programming in Prolog. In Proceedings of ICLP Technical Communications (pp. 224–237). doi:10.48550/arXiv.1907.11354 |
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