composite-cassava: Csv parsing functionality for composite.

[ composite, csv, library, mit ] [ Propose Tags ]

Csv parsing functionality for composite.


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Versions [RSS] 0.0.1.0, 0.0.2.0, 0.0.3.0, 0.0.3.1
Change log ChangeLog.md
Dependencies base (>=4.7 && <5), cassava (>=0.5.0.0 && <0.6), composite-base (>=0.7.0.0 && <0.8), text, unordered-containers, vector [details]
License MIT
Copyright Daniel Firth
Author Daniel Firth
Maintainer dan.firth@homotopic.tech
Category Composite, Csv
Source repo head: git clone https://gitlab.homotopic.tech/haskell/composite-cassava
Uploaded by locallycompact at 2021-09-01T12:07:02Z
Distributions NixOS:0.0.3.1
Downloads 290 total (0 in the last 30 days)
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Status Docs available [build log]
Last success reported on 2021-09-01 [all 1 reports]

Readme for composite-cassava-0.0.3.1

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composite-cassava

Provides FromNamedRecord and ToNamedRecord instances for composite records.

In order to use this, use DerivingVia with one of the newtypes, depending on your use case. The recommended way is like so:

withLensesAndProxies
  [d|
    type A = "A" :-> Text

    type B = "B" :-> Double

    type C = "C" :-> Text

    type D = "D" :-> Int
    |]

type RecMaybe = Rec Maybe '[A, B, C, D]

deriving newtype instance FromField A

deriving newtype instance FromField B

deriving newtype instance FromField C

deriving newtype instance FromField D

deriving newtype instance ToField A

deriving newtype instance ToField B

deriving newtype instance ToField C

deriving newtype instance ToField D

deriving via (TF Maybe '[A, B, C, D]) instance FromNamedRecord RecMaybe

deriving via (TF Maybe '[A, B, C, D]) instance ToNamedRecord RecMaybe