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Haskell typeclass constraint cannot be resolved due to Paterson's conditions

score 320 · Answer 1 · 2018-08-17T14:32:34.920000

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Haskell typeclass constraint cannot be resolved due to Paterson's conditions

320 views Asked by madgen At 17 August 2018 at 14:32

score 176 · Answer 2 · 2018-11-29T20:14:09.643000

GHC stuck due to UndecidableSuperClasses - expected behaviour or bug?

176 views Asked by yairchu At 29 November 2018 at 20:14

score 167 · Answer 3 · 2023-06-26T10:29:16.497000

Is it able to avoid UndecidableInstances in this example?

167 views Asked by qimokao At 26 June 2023 at 10:29

score 98 · Answer 4 · 2017-07-04T00:06:08.980000

Writing generic Monoid over Cofree; undecidable?

98 views Asked by Chris Penner At 04 July 2017 at 00:06

score 1072 · Answer 5 · 2017-02-20T23:50:53.537000

How can undecidable instances actually hang the compiler?

1k views Asked by leftaroundabout At 20 February 2017 at 23:50

score 101 · Answer 6 · 2022-02-14T16:36:25.633000

Example of the undecidability of higher-order unification

101 views Asked by nikkkk At 14 February 2022 at 16:36

score 228 · Answer 7 · 2021-11-02T13:53:16.450000

Transitive 'Subset` class for type-level-sets

228 views Asked by ShapeOfMatter At 02 November 2021 at 13:53

score 185 · Answer 8 · 2016-05-24T17:14:03.493000

Can I automatically produce typeclass instances for a conversion function without being overly permissive?

185 views Asked by Alexis King At 24 May 2016 at 17:14

score 376 · Answer 9 · 2016-05-23T22:37:58.557000

Why does this code using UndecidableInstances compile, then generate a runtime infinite loop?

376 views Asked by Alexis King At 23 May 2016 at 22:37

score 1698 · Answer 10 · 2017-04-21T17:25:36.453000

Turing Machine for regular languages

1.6k views Asked by Mba7eth At 21 April 2017 at 17:25

score 525 · Answer 11 · 2017-11-24T14:52:40.427000

Turing machine decidability ambiguous cases

525 views Asked by Cmôn At 24 November 2017 at 14:52

score 134 · Answer 12 · 2020-08-29T02:37:25.427000

Using Barbies' AllBF in an instance head without UndecidableInstances

134 views Asked by Cactus At 29 August 2020 at 02:37

TechQA.

List Question

Haskell typeclass constraint cannot be resolved due to Paterson's conditions

GHC stuck due to UndecidableSuperClasses - expected behaviour or bug?

Is it able to avoid UndecidableInstances in this example?

Writing generic Monoid over Cofree; undecidable?

How can undecidable instances actually hang the compiler?

Example of the undecidability of higher-order unification

Transitive 'Subset` class for type-level-sets

Can I automatically produce typeclass instances for a conversion function without being overly permissive?

Why does this code using UndecidableInstances compile, then generate a runtime infinite loop?

Turing Machine for regular languages

Turing machine decidability ambiguous cases

Using Barbies' AllBF in an instance head without UndecidableInstances

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