Model-View-Update-Communicate: Session Types Meet the Elm Architecture (Artifact)

Author Simon Fowler

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  • Filesize: 315 kB
  • 2 pages

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Author Details

Simon Fowler
  • University of Edinburgh, United Kingdom


I thank the ECOOP'20 Artifact Evaluation Committee for their detailed and constructive reviews. The packaging of this artifact is based on

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Simon Fowler. Model-View-Update-Communicate: Session Types Meet the Elm Architecture (Artifact). In Special Issue of the 34th European Conference on Object-Oriented Programming (ECOOP 2020). Dagstuhl Artifacts Series (DARTS), Volume 6, Issue 2, pp. 13:1-13:2, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)



Model-View-Update (MVU) is a development pattern for user interfaces pioneered by the Elm programming language. In the accompanying paper, we show a theoretical model of MVU, and detail how it can be extended to support session-typed communication. This artifact consists of a Docker image which contains a version of the Links programming language, equipped with an MVU library supporting session-typed communication. The implementation is showcased by all examples provided in the paper, alongside larger examples including a two-factor authentication workflow and multi-room chat server.

Subject Classification

ACM Subject Classification
  • Software and its engineering → Concurrent programming languages
  • Session types
  • concurrent programming
  • Model-View-Update


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  1. Simon Fowler, Sam Lindley, J. Garrett Morris, and Sára Decova. Exceptional asynchronous session types: Session types without tiers (companion artifact). URL:
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