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DOI: 10.4230/LIPIcs.ECOOP.2019.5

Transient Typechecks Are (Almost) Free

Authors: Richard Roberts, Stefan Marr, Michael Homer, and James Noble

Published in: LIPIcs, Volume 134, 33rd European Conference on Object-Oriented Programming (ECOOP 2019)

Abstract

Transient gradual typing imposes run-time type tests that typically cause a linear slowdown. This performance impact discourages the use of type annotations because adding types to a program makes the program slower. A virtual machine can employ standard just-in-time optimizations to reduce the overhead of transient checks to near zero. These optimizations can give gradually-typed languages performance comparable to state-of-the-art dynamic languages, so programmers can add types to their code without affecting their programs' performance.

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Richard Roberts, Stefan Marr, Michael Homer, and James Noble. Transient Typechecks Are (Almost) Free. In 33rd European Conference on Object-Oriented Programming (ECOOP 2019). Leibniz International Proceedings in Informatics (LIPIcs), Volume 134, pp. 5:1-5:28, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2019)

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@InProceedings{roberts_et_al:LIPIcs.ECOOP.2019.5,
  author =	{Roberts, Richard and Marr, Stefan and Homer, Michael and Noble, James},
  title =	{{Transient Typechecks Are (Almost) Free}},
  booktitle =	{33rd European Conference on Object-Oriented Programming (ECOOP 2019)},
  pages =	{5:1--5:28},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-111-5},
  ISSN =	{1868-8969},
  year =	{2019},
  volume =	{134},
  editor =	{Donaldson, Alastair F.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2019.5},
  URN =		{urn:nbn:de:0030-drops-107974},
  doi =		{10.4230/LIPIcs.ECOOP.2019.5},
  annote =	{Keywords: dynamic type checking, gradual types, optional types, Grace, Moth, object-oriented programming}
}

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Transient Typechecks Are (Almost) Free

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