plur: Plurality monad: Zero, one, or at least two.

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Often when counting you don't need an exact count, but only whether there are two things. Two examples:

When searching for inhabitants of a type (implementations of a program), you want to be able to tell whether there are (a) no possible inhabitants, (b) a unique inhabitant, or (c) multiple inhabitants.

When displaying the name of a variable, if there's exactly one variable of a given name ("a") you can just use that name, but if there are multiples you might use a unique id to disambiguate them ("a1" vs "a2").

Properties

Versions 0.1.0.0, 0.2.0.0, 0.2.0.0
Change log ChangeLog.md
Dependencies base (>=4.3 && <4.14), semigroups (>=0.18) [details]
License BSD-3-Clause
Copyright (c) 2018-2019 Joel Burget
Author Joel Burget
Maintainer joelburget@gmail.com
Category Data
Uploaded by joelb at 2019-02-12T20:20:54Z

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