Schloss Dagstuhl - Leibniz-Zentrum für Informatik GmbH Schloss Dagstuhl - Leibniz-Zentrum für Informatik GmbH scholarly article en Chung, Benjamin; Li, Paley; Nardelli, Francesco Zappa; Vitek, Jan License: Creative Commons Attribution 3.0 Germany license (CC BY 3.0 DE)
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KafKa: Gradual Typing for Objects (Artifact)



A wide range of gradual type systems have been proposed, providing many languages with the ability to mix typed and untyped code. However, hiding under language details, these gradual type systems have fundamentally different ideas of what it means to be typed. In this paper, we show that four of the most common gradual type systems provide distinct guarantees, and we give a formal framework for comparing gradual type systems for object-oriented languages. First, we show that the different gradual type systems are practically distinguishable via a three-part litmus test. Then, we present a formal framework for defining and comparing gradual type systems. Within this framework, different gradual type systems become translations between a common source and target language, allowing for direct comparison of semantics and guarantees.

BibTeX - Entry

  author =	{Benjamin Chung and Paley Li and Francesco Zappa Nardelli and Jan Vitek},
  title =	{{KafKa: Gradual Typing for Objects (Artifact)}},
  pages =	{10:1--10:3},
  journal =	{Dagstuhl Artifacts Series},
  ISSN =	{2509-8195},
  year =	{2018},
  volume =	{4},
  number =	{3},
  publisher =	{Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{},
  doi =		{10.4230/DARTS.4.3.10},
  annote =	{Keywords: Gradual typing, object-orientation, language design, type systems}

Keywords: Gradual typing, object-orientation, language design, type systems
Seminar: DARTS, Volume 4, Issue 3
Related Scholarly Article:
Issue date: 2018
Date of publication: 05.07.2018

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