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Documents authored by Parreaux, Lionel

Document
DOI: 10.4230/LIPIcs.ECOOP.2023.11
super-Charging Object-Oriented Programming Through Precise Typing of Open Recursion

Authors: Andong Fan and Lionel Parreaux

Published in: LIPIcs, Volume 263, 37th European Conference on Object-Oriented Programming (ECOOP 2023)

Abstract
We present a new variation of object-oriented programming built around three simple and orthogonal constructs: classes for storing object state, interfaces for expressing object types, and mixins for reusing and overriding implementations. We show that the latter can be made uniquely expressive by leveraging a novel feature that we call precisely-typed open recursion. This features uses "this" and "super" annotations to express the requirements of any given partial method implementation on the types of respectively the current object and the inherited definitions. Crucially, the fact that mixins do not introduce types nor subtyping relationships means they can be composed even when the overriding and overridden methods have incomparable types. Together with advanced type inference and structural typing support provided by the MLscript programming language, we show that this enables an elegant and powerful solution to the Expression Problem.
Cite as

Andong Fan and Lionel Parreaux. super-Charging Object-Oriented Programming Through Precise Typing of Open Recursion. In 37th European Conference on Object-Oriented Programming (ECOOP 2023). Leibniz International Proceedings in Informatics (LIPIcs), Volume 263, pp. 11:1-11:28, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2023)

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@InProceedings{fan_et_al:LIPIcs.ECOOP.2023.11,
  author =	{Fan, Andong and Parreaux, Lionel},
  title =	{{super-Charging Object-Oriented Programming Through Precise Typing of Open Recursion}},
  booktitle =	{37th European Conference on Object-Oriented Programming (ECOOP 2023)},
  pages =	{11:1--11:28},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-281-5},
  ISSN =	{1868-8969},
  year =	{2023},
  volume =	{263},
  editor =	{Ali, Karim and Salvaneschi, Guido},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2023.11},
  URN =		{urn:nbn:de:0030-drops-182047},
  doi =		{10.4230/LIPIcs.ECOOP.2023.11},
  annote =	{Keywords: Object-Oriented Programming, the Expression Problem, Open Recursion}
}
Document
Artifact
DOI: 10.4230/DARTS.9.2.22
super-Charging Object-Oriented Programming Through Precise Typing of Open Recursion (Artifact)

Authors: Andong Fan and Lionel Parreaux

Published in: DARTS, Volume 9, Issue 2, Special Issue of the 37th European Conference on Object-Oriented Programming (ECOOP 2023)

Abstract
This artifact consists of an SBT project with a Scala implementation of the MLscript programming language extended with "super-charged" object-oriented programming features (SuperOOP), introduced in the corresponding paper. We provide a test suite that includes SuperOOP examples and a web demo that gives live typing and running results of the user input source.
Cite as

Andong Fan and Lionel Parreaux. super-Charging Object-Oriented Programming Through Precise Typing of Open Recursion (Artifact). In Special Issue of the 37th European Conference on Object-Oriented Programming (ECOOP 2023). Dagstuhl Artifacts Series (DARTS), Volume 9, Issue 2, pp. 22:1-22:2, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2023)

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@Article{fan_et_al:DARTS.9.2.22,
  author =	{Fan, Andong and Parreaux, Lionel},
  title =	{{super-Charging Object-Oriented Programming Through Precise Typing of Open Recursion (Artifact)}},
  pages =	{22:1--22:2},
  journal =	{Dagstuhl Artifacts Series},
  ISSN =	{2509-8195},
  year =	{2023},
  volume =	{9},
  number =	{2},
  editor =	{Fan, Andong and Parreaux, Lionel},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DARTS.9.2.22},
  URN =		{urn:nbn:de:0030-drops-182626},
  doi =		{10.4230/DARTS.9.2.22},
  annote =	{Keywords: Object-Oriented Programming, the Expression Problem, Open Recursion}
}
Document
Pearl
DOI: 10.4230/LIPIcs.ECOOP.2019.25
Finally, a Polymorphic Linear Algebra Language (Pearl)

Authors: Amir Shaikhha and Lionel Parreaux

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

Abstract
Many different data analytics tasks boil down to linear algebra primitives. In practice, for each different type of workload, data scientists use a particular specialised library. In this paper, we present Pilatus, a polymorphic iterative linear algebra language, applicable to various types of data analytics workloads. The design of this domain-specific language (DSL) is inspired by both mathematics and programming languages: its basic constructs are borrowed from abstract algebra, whereas the key technology behind its polymorphic design uses the tagless final approach (a.k.a. polymorphic embedding/object algebras). This design enables us to change the behaviour of arithmetic operations to express matrix algebra, graph algorithms, logical probabilistic programs, and differentiable programs. Crucially, the polymorphic design of Pilatus allows us to use multi-stage programming and rewrite-based optimisation to recover the performance of specialised code, supporting fixed sized matrices, algebraic optimisations, and fusion.
Cite as

Amir Shaikhha and Lionel Parreaux. Finally, a Polymorphic Linear Algebra Language (Pearl). In 33rd European Conference on Object-Oriented Programming (ECOOP 2019). Leibniz International Proceedings in Informatics (LIPIcs), Volume 134, pp. 25:1-25:29, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2019)

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@InProceedings{shaikhha_et_al:LIPIcs.ECOOP.2019.25,
  author =	{Shaikhha, Amir and Parreaux, Lionel},
  title =	{{Finally, a Polymorphic Linear Algebra Language}},
  booktitle =	{33rd European Conference on Object-Oriented Programming (ECOOP 2019)},
  pages =	{25:1--25:29},
  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.2019.25},
  URN =		{urn:nbn:de:0030-drops-108172},
  doi =		{10.4230/LIPIcs.ECOOP.2019.25},
  annote =	{Keywords: Linear Algebra, Domain-Specific Languages, Tagless Final, Polymorphic Embedding, Object Algebra, Multi-Stage Programming, Graph Processing, Probabilistic Programming, Automatic Differentiation}
}
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