currency-codes: ISO-4217 Currency Codes

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ISO-4217 Currency Codes

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Properties

Versions	1.0.0.0, 1.0.0.0, 1.0.0.1, 1.0.0.2, 1.0.0.3, 2.0.0.0, 3.0.0.0, 3.0.0.1
Change log	CHANGELOG.md
Dependencies	aeson, base (>=4.7 && <5), bson, lens, random, safe, swagger2, text [details]
License	MIT
Copyright	(c) 2017 Chordify
Author	Chordify
Maintainer	Matthias Benkort <matthias@chordify.net>
Category	Data
Home page	https://gitlab.com
Bug tracker	https://github.com/bos/aeson/issues
Uploaded	by KtorZ at 2017-08-28T14:43:34Z

Modules

Data
- Data.Currency

Downloads

currency-codes-1.0.0.0.tar.gz [browse] (Cabal source package)
Package description (as included in the package)

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Package maintainers

KtorZ

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Readme for currency-codes-1.0.0.0

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Currency Codes (ISO-4217)

Overview

This package mainly provides 2 data types to represent and manipulate currencies according to the ISO 4217 standard.

It also provides a handful of instances for common typeclasses (Show, Read, Random, ToJSON, FromJSON, Val, ToSchema).

Example

import           Data.Aeson     (ToJSON(..))
import qualified Data.Aeson     as Aeson
import           Data.Currency  (Currency, Alpha)
import qualified Data.Currency  as Currency
import           GHC.Generics   (Generic)
import qualified Safe


myCurrencies :: [Currency]
myCurrencies =
  [Currency.eur, Currency.usdDollar]

fromAlpha :: Alpha -> [Currency] -> Maybe Currency
fromAlpha α =
  Safe.headMay . filter (== α)


data Transaction = Transaction
  { amount   :: Integer
  , currency :: Currency
  } deriving (Eq, Show, Generic)

instance ToJSON Transaction where
  toJSON = 
    Aeson.genericToJSON Aeson.defaultOptions

Changelog

CHANGELOG.md