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Tackling the Awkward Squad for Reactive Programming: The Actor-Reactor Model (Artifact)

Authors: Sam Van den Vonder, Thierry Renaux, Bjarno Oeyen, Joeri De Koster, and Wolfgang De Meuter

Published in: DARTS, Volume 6, Issue 2, Special Issue of the 34th European Conference on Object-Oriented Programming (ECOOP 2020)

Abstract

This artefact provides runnable versions of the code samples given in the main publication. An interpreter for the Stella language is provided together with a basic web-based IDE (syntax highlighting + running programs) which is able to run all Stella code given in the main publication. Also included are runnable implementations of the running example from the main publication (a simple wind turbine simulator) implemented in Stella and 6 other languages and frameworks (Akka, Flapjax, FrTime, ReactJS, REScala, and RxJS). While we do not discuss how these other technologies work, we highlight the interesting parts of the implementations of the running example: the difficulties we had, and any particular points of interest related to the claims made in the main publication.

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Sam Van den Vonder, Thierry Renaux, Bjarno Oeyen, Joeri De Koster, and Wolfgang De Meuter. Tackling the Awkward Squad for Reactive Programming: The Actor-Reactor Model (Artifact). In Special Issue of the 34th European Conference on Object-Oriented Programming (ECOOP 2020). Dagstuhl Artifacts Series (DARTS), Volume 6, Issue 2, pp. 7:1-7:4, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)

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@Article{vandenvonder_et_al:DARTS.6.2.7,
  author =	{Van den Vonder, Sam and Renaux, Thierry and Oeyen, Bjarno and De Koster, Joeri and De Meuter, Wolfgang},
  title =	{{Tackling the Awkward Squad for Reactive Programming: The Actor-Reactor Model (Artifact)}},
  pages =	{7:1--7:4},
  journal =	{Dagstuhl Artifacts Series},
  ISSN =	{2509-8195},
  year =	{2020},
  volume =	{6},
  number =	{2},
  editor =	{Van den Vonder, Sam and Renaux, Thierry and Oeyen, Bjarno and De Koster, Joeri and De Meuter, Wolfgang},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DARTS.6.2.7},
  URN =		{urn:nbn:de:0030-drops-132045},
  doi =		{10.4230/DARTS.6.2.7},
  annote =	{Keywords: functional reactive programming, reactive programming, reactive streams, actors, reactors}
}

Document

DOI: 10.4230/LIPIcs.ECOOP.2020.19

Tackling the Awkward Squad for Reactive Programming: The Actor-Reactor Model

Authors: Sam Van den Vonder, Thierry Renaux, Bjarno Oeyen, Joeri De Koster, and Wolfgang De Meuter

Published in: LIPIcs, Volume 166, 34th European Conference on Object-Oriented Programming (ECOOP 2020)

Abstract

Reactive programming is a programming paradigm whereby programs are internally represented by a dependency graph, which is used to automatically (re)compute parts of a program whenever its input changes. In practice reactive programming can only be used for some parts of an application: a reactive program is usually embedded in an application that is still written in ordinary imperative languages such as JavaScript or Scala. In this paper we investigate this embedding and we distill "the awkward squad for reactive programming" as 3 concerns that are essential for real-world software development, but that do not fit within reactive programming. They are related to long lasting computations, side-effects, and the coordination between imperative and reactive code. To solve these issues we design a new programming model called the Actor-Reactor Model in which programs are split up in a number of actors and reactors. Actors and reactors enforce a strict separation of imperative and reactive code, and they can be composed via a number of composition operators that make use of data streams. We demonstrate the model via our own implementation in a language called Stella.

Cite as

Sam Van den Vonder, Thierry Renaux, Bjarno Oeyen, Joeri De Koster, and Wolfgang De Meuter. Tackling the Awkward Squad for Reactive Programming: The Actor-Reactor Model. In 34th European Conference on Object-Oriented Programming (ECOOP 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 166, pp. 19:1-19:29, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)

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@InProceedings{vandenvonder_et_al:LIPIcs.ECOOP.2020.19,
  author =	{Van den Vonder, Sam and Renaux, Thierry and Oeyen, Bjarno and De Koster, Joeri and De Meuter, Wolfgang},
  title =	{{Tackling the Awkward Squad for Reactive Programming: The Actor-Reactor Model}},
  booktitle =	{34th European Conference on Object-Oriented Programming (ECOOP 2020)},
  pages =	{19:1--19:29},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-154-2},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{166},
  editor =	{Hirschfeld, Robert and Pape, Tobias},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2020.19},
  URN =		{urn:nbn:de:0030-drops-131768},
  doi =		{10.4230/LIPIcs.ECOOP.2020.19},
  annote =	{Keywords: functional reactive programming, reactive programming, reactive streams, actors, reactors}
}

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Tackling the Awkward Squad for Reactive Programming: The Actor-Reactor Model (Artifact)

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Tackling the Awkward Squad for Reactive Programming: The Actor-Reactor Model

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