base32-lens: Optics for the Base32 library

[ bsd3, data, library ] [ Propose Tags ]

Prisms and pattern synonyms for the Base32 library


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Versions [RSS] [faq] 0.1.0.0, 0.1.1.0, 0.1.1.1
Change log CHANGELOG.md
Dependencies base (>=4.10 && <5), base32 (>=0.1 && <0.3), bytestring (==0.10.*), lens (>=4.0 && <5), text (==1.2.*) [details]
License BSD-3-Clause
Copyright (c) 2020 Emily Pillmore
Author Emily Pillmore
Maintainer emilypi@cohomolo.gy
Revised Revision 1 made by topos at 2020-07-22T15:29:53Z
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Home page https://github.com/emilypi/base32-lens
Bug tracker https://github.com/emilypi/base32-lens/issues
Source repo head: git clone https://github.com/emilypi/base32.git
Uploaded by topos at 2020-02-16T18:07:38Z
Distributions LTSHaskell:0.1.1.1, NixOS:0.1.1.1, Stackage:0.1.1.1
Downloads 340 total (11 in the last 30 days)
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Status Hackage Matrix CI
Docs available [build log]
Last success reported on 2020-02-16 [all 1 reports]

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Readme for base32-lens-0.1.0.0

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Base32-lens

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This package provides optics and convenient pattern synonyms for the base32 library.

Patterns

The pattern synonyms provided in this library are:

pattern Base32 :: ByteString -> ByteString
pattern Base32Url :: ByteString -> ByteString
pattern Base32UrlUnpadded :: ByteString -> ByteString

-- and

pattern Base32 :: Text -> Text
pattern Base32Url :: Text -> Text
pattern Base32UrlUnpadded :: Text -> Text

These provide a convenient high level interface for passing Base32 encoded values.

Optics

Prisms for encoding and decoding Text and ByteString values are given as part of the library:

_Base32 :: Prism' ByteString ByteString
_Base32Url :: Prism' ByteString ByteString
_Base32UrlUnpadded :: Prism' ByteString ByteString

-- and

_Base32 :: Prism' Text Text
_Base32Url :: Prism' Text Text
_Base32UrlUnpadded :: Prism' Text Text

If a particular structure has a Lens into some Text or ByteString value they might want to encode (or decode), then composing such a Lens with these Prisms yields an affine Traversal, resulting in a structure which has the focus of its Lens encoded as or decoded from Base32(-url).