Volume 7 Number 5 (May. 2012)
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JSW 2012 Vol.7(5): 1136-1148 ISSN: 1796-217X
doi: 10.4304/jsw.7.5.1136-1148

A new paradigm for component-based development

Johan G. Granstr¨om

Abstract—Hancock and Setzer [10] describe how Haskell’s monolithic IO monad can be decomposed into worlds when working in a dependently typed language, like Martin-L¨of’s type theory [15]. This paper introduces the notion of world map and shows that worlds and world maps form a category with arbitrary products. The construction of the category is carried out entirely in type theory and directly implementable in dependently typed programming languages. If we let the notion of world replace the standard notion of interface, and the notion of world map replace the standard notion of component, we get a rigorous paradigm for componentbased development. This new paradigm is investigated and several applications are given. For example, the problem of session state is given a very clean solution (p. 8).

Index Terms—functional constructs, components, functional programming, semantics of programming languages


Cite: Johan G. Granstr¨om, "A new paradigm for component-based development," Journal of Software vol. 7, no. 5, pp. 1136-1148, 2012.

General Information

ISSN: 1796-217X (Online)
Frequency:  Bimonthly (Since 2020)
Editor-in-Chief: Prof. Antanas Verikas
Executive Editor: Ms. Yoyo Y. Zhou
Abstracting/ Indexing: DBLP, EBSCO, Google Scholar, ProQuest, INSPEC(IET), ULRICH's Periodicals Directory, WorldCat, etc
E-mail: jsw@iap.org
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