Article

Strongly typed heterogeneous collections

Authors:

Keean SchupkeAuthors Info & Claims

Haskell '04: Proceedings of the 2004 ACM SIGPLAN workshop on Haskell

Pages 96 - 107

https://doi.org/10.1145/1017472.1017488

Published: 22 September 2004 Publication History

Abstract

A heterogeneous collection is a datatype that is capable of storing data of different types, while providing operations for look-up, update, iteration, and others. There are various kinds of heterogeneous collections, differing in representation, invariants, and access operations. We describe HLIST - a Haskell library for strongly typed heterogeneous collections including extensible records. We illustrate HLIST's benefits in the context of type-safe database access in Haskell. The HLIST library relies on common extensions of Haskell 98. Our exploration raises interesting issues regarding Haskell's type system, in particular, avoidance of overlapping instances, and reification of type equality and type unification.

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Cited By

Keating FGale MVazou NMorris J(2024)Functional Reactive Programming, RearrangedProceedings of the 17th ACM SIGPLAN International Haskell Symposium10.1145/3677999.3678278(55-67)Online publication date: 29-Aug-2024
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Index Terms

Strongly typed heterogeneous collections

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cover image ACM Conferences

Haskell '04: Proceedings of the 2004 ACM SIGPLAN workshop on Haskell

September 2004

122 pages

ISBN:1581138504

DOI:10.1145/1017472

Program Chair:
Henrik Nilsson
University of Nottingham, UK

Copyright © 2004 ACM.

Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Published: 22 September 2004

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September 22, 2004

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Overall Acceptance Rate 57 of 143 submissions, 40%

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Cited By

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https://dl.acm.org/doi/10.1145/3677999.3678278
Rinaldi Fwunder jAzevedo de Amorim AMuller S(2024)Pipelines and Beyond: Graph Types for ADTs with FuturesProceedings of the ACM on Programming Languages10.1145/36328598:POPL(482-511)Online publication date: 5-Jan-2024
https://dl.acm.org/doi/10.1145/3632859
Koopman PLubbers M(2023)Strongly-Typed Multi-View Stack-Based ComputationsProceedings of the 25th International Symposium on Principles and Practice of Declarative Programming10.1145/3610612.3610623(1-12)Online publication date: 22-Oct-2023
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Liu YWeirich S(2023)Dependently-Typed Programming with Logical Equality ReflectionProceedings of the ACM on Programming Languages10.1145/36078527:ICFP(649-685)Online publication date: 31-Aug-2023
https://dl.acm.org/doi/10.1145/3607852
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