文章基本信息

标题：Operational Semantics for Lazy Evaluation
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作者：Abou Ghaly, Mahmoud A. ; Daoud, Sameh S. ; Taha, Azza A. 等
期刊名称：Journal of Computer Science
印刷版ISSN：1549-3636
出版年度：2007
卷号：3
期号：8
页码：639-645
DOI：10.3844/jcssp.2007.639.645
出版社：Science Publications
摘要：An operational semantics for lazy evaluation of a calculus without higher order functions was defined. Although it optimizes many aspects of implementation, e.g. there is a sharing in the recursive computation, there is no α conversion, the heap is automatically reclaimed, and an attempt to evaluate an argument is done at most once. It is still suitable for reasoning about program behavior and proofs of program correctness; this is primarily due to the definition via inferences and axioms which allows for proofs by induction on the height of the proof tree. We also proved the correctness of this operational semantics by showing that it is equivalent with respect to the values calculated to the operational semantics of LAZY-PCF+SHAR due to S. Purushothaman Iyer and Jill Seaman.
关键词：Higher order functions; α conversion; LAZY-PCF+SHAR