Comprehensive comprehensions

S. Jones, P. Wadler
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引用次数: 50

Abstract

We propose an extension to list comprehensions that makes it easy to express the kind of queries one would write in SQL using ORDER BY, GROUP BY, and LIMIT. Our extension adds expressive power to comprehensions, and generalises the SQL constructs that inspired it. It is easy to implement, using simple desugaring rules.
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全面的理解
我们建议对列表推导式进行扩展,以方便表达使用ORDER BY、GROUP BY和LIMIT在SQL中编写的查询类型。我们的扩展为推导式增加了表达能力,并推广了启发它的SQL结构。它很容易实现,使用简单的脱糖规则。
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