first-class-patterns: First class patterns and pattern matching, using type families

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This package implements a library of first class patterns. The initial basis for this library was Morten Rhiger's "Type-safe pattern combinators"; the patterns can be used in an almost identical way to those of Morten Rhiger. In a series of blog posts at http://reinerp.wordpress.com/category/pattern-combinators/ the types of patterns were made more revealing using type families, and a simpler implementation was used which avoids some book-keeping.

The library reimplements most of Haskell's built-in pattern matching facilities, plus some more. The pattern matches of this library are lightweight: when GHC's optimisation is turned on, all overhead should be optimised away, leaving a standard Haskell pattern match.

If you're just reading the documentation for this library for the first time, start with Data.Pattern.

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Modules

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Data
- Data.Pattern
  - Data.Pattern.Base
    - Data.Pattern.Base.Tuple
    - Data.Pattern.Base.TypeList
  - Data.Pattern.Common

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first-class-patterns-0.3.2.5.tar.gz [browse] (Cabal source package)
Package description (as included in the package)

Maintainer's Corner

Package maintainers

BrentYorgey, ReinerPope, vrom911

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Candidates

0.3.2.4, 0.3.2.5

Versions [RSS]	0.1.0, 0.2.0, 0.3.0, 0.3.1, 0.3.2, 0.3.2.1, 0.3.2.2, 0.3.2.3, 0.3.2.4, 0.3.2.5
Change log	CHANGELOG.md
Dependencies	base (>=4.10.1.0 && <5), transformers (>=0.1.0 && <0.6) [details]
Tested with	ghc ==8.2.2, ghc ==8.4.4, ghc ==8.6.5, ghc ==8.8.8
License	BSD-3-Clause
Author	Reiner Pope, Brent Yorgey
Maintainer	Kowainik <xrom.xkov@gmail.com>
Category	Data, Pattern
Home page	https://github.com/kowainik/first-class-patterns
Bug tracker	https://github.com/kowainik/first-class-patterns/issues
Source repo	head: git clone git://github.com/kowainik/first-class-patterns.git
Uploaded	by shersh at 2019-10-01T18:22:52Z
Distributions
Reverse Dependencies	1 direct, 0 indirect [details]
Downloads	8536 total (51 in the last 30 days)
Rating	2.25 (votes: 2) [estimated by Bayesian average]
Your Rating	λ λ λ
Status	Docs available [build log] Last success reported on 2019-10-01 [all 1 reports]

Readme for first-class-patterns-0.3.2.5

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first-class-patterns

Implements patterns in Haskell as first class objects.