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The arrow calculus

  • SAM LINDLEY (a1), PHILIP WADLER (a1) and JEREMY YALLOP (a1)
Abstract
Abstract

We introduce the arrow calculus, a metalanguage for manipulating Hughes's arrows with close relations both to Moggi's metalanguage for monads and to Paterson's arrow notation. Arrows are classically defined by extending lambda calculus with three constructs satisfying nine (somewhat idiosyncratic) laws; in contrast, the arrow calculus adds four constructs satisfying five laws (which fit two well-known patterns). The five laws were previously known to be sound; we show that they are also complete, and hence that the five laws may replace the nine.

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R. Atkey (2008) What is a categorical model of arrows? In Mathematical Structures in Functional Programming, V. Capreta & C. McBride (eds), Electronic Notes in Theoretical Computer Science, Reykjavic, Iceland.

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S. Lindley , P. Wadler & J. Yallop (2008a) The Arrow Calculus. Tech. rept. EDI-INF-RR-1258. School of Informatics, University of Edinburgh.


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Journal of Functional Programming
  • ISSN: 0956-7968
  • EISSN: 1469-7653
  • URL: /core/journals/journal-of-functional-programming
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