matchable: A type class for Matchable Functors.

[ bsd3, functors, library ] [ Propose Tags ]

This package provides a type class Matchable, which represents zipMatch operation which can zip two values if these two have exactly same shape.

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Versions [faq]	0.1.1.1, 0.1.2
Change log	CHANGELOG.md
Dependencies	base (>=4.10 && <5), containers (>=0.5.10.2 && <0.7), hashable (>=1.0.1.1 && <1.4), tagged (==0.8.*), unordered-containers (>=0.2.6 && <0.3), vector (>=0.10.9.0 && <0.13) [details]
License	BSD-3-Clause
Author	Koji Miyazato
Maintainer	viercc@gmail.com
Revised	Revision 1 made by viercc at 2020-07-25T10:27:27Z
Category	Functors
Source repo	head: git clone https://github.com/viercc/matchable -b master
Uploaded	by viercc at 2018-12-31T07:26:46Z
Distributions	NixOS:0.1.2
Downloads	893 total (4 in the last 30 days)
Rating	(no votes yet) [estimated by Bayesian average]
Your Rating	λ λ λ
Status	Docs available [build log] Last success reported on 2018-12-31 [all 1 reports]

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Data
- Data.Bimatchable
- Data.Matchable

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matchable-0.1.2.tar.gz [browse] (Cabal source package)
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Readme for matchable-0.1.2

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matchable

This package provides a type class Matchable, which represents zipMatch operation which can zip two values.

zipMatch operation can fail, and it returns zipped value wrapped in Maybe. Specifically, zipMatch returns zipped value if and only if two arguments have exactly same shape.

Example

>>> zipMatch [1,2] ['a','b']
Just [(1,'a'), (2,'b')]
>>> zipMatch [1,2,3] ['a','b']
Nothing

See example also.