dependent-sum: Dependent sum type

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A dependent sum is a generalization of a particular way of thinking about the Either type. Either a b can be thought of as a 2-tuple (tag, value), where the value of the tag determines the type of the value. In particular, either tag = Left and value :: a or tag = Right and value :: b.

This package allows you to define your own dependent sum types by using your own "tag" types.


Versions 0.1, 0.2,,,,,,,, 0.4, 0.5, 0.6, 0.6.1,,,,,
Change log
Dependencies base (>=4.9 && <5), constraints-extras (>=0.2 && <0.4), some (>= && <1.0.1) [details]
License LicenseRef-PublicDomain
Author James Cook <>
Maintainer James Cook <>
Category Data, Dependent Types
Home page
Source repo head: git clone
Uploaded by 3noch at 2020-03-24T01:46:20Z




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