A Lightweight Combination of Semantics for Non-deterministic Functions

Autor:	Lopez-Fraguas, Francisco Javier, Rodriguez-Hortala, Juan, Sanchez-Hernandez, Jaime
Rok vydání:	2009
Předmět:	Computer Science - Programming Languages
Druh dokumentu:	Working Paper
Popis:	The use of non-deterministic functions is a distinctive feature of modern functional logic languages. The semantics commonly adopted is call-time choice, a notion that at the operational level is related to the sharing mechanism of lazy evaluation in functional languages. However, there are situations where run-time choice, closer to ordinary rewriting, is more appropriate. In this paper we propose an extension of existing call-time choice based languages, to provide support for run-time choice in localized parts of a program. The extension is remarkably simple at three relevant levels: syntax, formal operational calculi and implementation, which is based on the system Toy. Comment: Paper presented at the 18th Workshop on Logic-based Methods in Programming Environments (WLPE2008) (Report-No: WLPE/2008). Paper submitted by a co-editor of the Workshop proceedings
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0903.2205 Zobrazit plný text záznamu View this record from Arxiv