dime :coin:

A currency library based on the ISO-4217 standard for Gleam.

gleam add dime@1

Usage

import dime

pub fn main() {
  // parse alpha-3 code
  let gbp = dime.from_alpha_code("Gbp")

  // parse numeric code
  let huf = dime.from_numeric_code("348")

  // use exported constants
  let pln = dime.pln

  gbp
  |> dime.display_name // "Pound Sterling"

  gbp
  |> dime.symbol // "£"

  huf
  |> dime.minor_units // 2

  huf
  |> dime.alpha_code // "HUF"

  pln
  |> dime.numeric_code // "985"
}

Further documentation can be found at https://hexdocs.pm/dime.

Development

Updating the ISO-4217 dataset

To update the dataset that is used to test the ISO-4217 compliance of the library, first run the script below.

./scripts/extract_data.sh

It downloads the latest currency dataset from the website of the standard’s maintainer and converts it to a JSON file at test/data/currencies.json.

Then, to validate the compliance of the library, run the test suite for all targets and runtimes.

./scripts/matrix-test.sh

Roadmap

• localisation?