Strengthening the Zipper | Zendy

Tristan O.R. Allwood | Zendy; Susan Eisenbach | Zendy

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Strengthening the Zipper

Author(s) -

Tristan O.R. Allwood,

Susan Eisenbach

Publication year - 2010

Publication title -

electronic notes in theoretical computer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.242

H-Index - 60

ISSN - 1571-0661

DOI - 10.1016/j.entcs.2010.08.028

Subject(s) - zipper , cursor (databases) , computer science , rendering (computer graphics) , traverse , underpinning , computer graphics (images) , programming language , human–computer interaction , theoretical computer science , artificial intelligence , engineering , civil engineering , geodesy , geography

The zipper is a well known design pattern for providing a cursor-like interface to a data structure. However, the classic treatise by Huet only scratches the surface of some of its potential applications. In this paper we take inspiration from Huet, and describe a library suitable as an underpinning for structured editors. We consider a zipper structure that is suitable for traversing heterogeneous data types, encoding routes to other places in the tree (for bookmark or quick-jump functionality), expressing lexically bound information using contexts, and traversals for rendering a program indicating where the cursor is currently focused

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