https://github.com/cuducos/elm-format-number

✨Format numbers as pretty strings
https://github.com/cuducos/elm-format-number

elm format hacktoberfest i18n numbers

Last synced: 8 days ago
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✨Format numbers as pretty strings

• Host: GitHub
• URL: https://github.com/cuducos/elm-format-number
• Owner: cuducos
• License: bsd-3-clause
• Created: 2016-12-17T04:55:58.000Z (about 8 years ago)
• Default Branch: main
• Last Pushed: 2021-11-30T21:17:04.000Z (about 3 years ago)
• Last Synced: 2024-12-21T09:02:30.299Z (22 days ago)
• Topics: elm, format, hacktoberfest, i18n, numbers
• Language: Elm
• Homepage:
• Size: 283 KB
• Stars: 61
• Watchers: 5
• Forks: 19
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG
  • Funding: .github/FUNDING.yml
  • License: LICENSE

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• awesome-ccamel - cuducos/elm-format-number - ✨Format numbers as pretty strings (Elm)

README

        
# Elm Format Number ![Build](https://github.com/cuducos/elm-format-number/workflows/Build/badge.svg)

This simple [Elm](https://elm-lang.org) package formats `Float` numbers as pretty strings.

## Format

The `format` function formats `Float` numbers using a locale with settings:

```elm

import FormatNumber exposing (format)

import FormatNumber.Locales exposing (spanishLocale, usLocale)

format usLocale (pi * 1000)  --> "3,141.59"

format spanishLocale (pi * 1000)  --> "3.141,593"

```

It is flexible enough to deal with different number of decimals, different thousand separators, different decimal separator, and different ways to represent negative numbers — all that is possible using `Locale`s. The `base` locale matches Elm's native `String.fromFloat` using unicode minus (`U+2212`) instead of an hyphen/dash.

```elm

import FormatNumber exposing (format)

import FormatNumber.Locales exposing (Decimals(..), Locale, usLocale)

sharesLocale : Locale

sharesLocale =

    { usLocale

        | decimals = Exact 3

        , negativePrefix = "("

        , negativeSuffix = ")"

    }

format usLocale -pi --> "−3.14"

format sharesLocale -pi --> "(3.142)"

```

### The `Decimals` strategy type

`Decimals` type contains different strategies for handling the number of decimals when formatting the number.

* `Min Int` shows at least a certain amount of decimal digits, adding trailing zeros if needed.

* `Max Int` shows up to a certain amount of decimal digits, discarding trailing zeros if needed.

* `Exact Int` shows an exact number of decimal digits, adding trailing zeros if needed.

## Docs

The API is further documented in [package.elm-lang.org](http://package.elm-lang.org/packages/cuducos/elm-format-number/latest/FormatNumber).

## Tests

This package uses [elm-verify-examples](https://www.npmjs.com/package/elm-verify-examples), all the examples in the documentation are automatically tested:

```console

$ npm install

$ npm test

```