https://github.com/vviktorpl/elm-incremental-list

https://github.com/vviktorpl/elm-incremental-list

Last synced: 3 months ago
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• Host: GitHub
• URL: https://github.com/vviktorpl/elm-incremental-list
• Owner: vViktorPL
• License: mit
• Created: 2019-06-05T19:13:41.000Z (almost 6 years ago)
• Default Branch: master
• Last Pushed: 2019-06-05T20:45:57.000Z (almost 6 years ago)
• Last Synced: 2025-01-11T14:25:45.870Z (4 months ago)
• Language: Elm
• Size: 2.93 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# elm-incremental-list

This library makes it easy to generate lists similarly to `List.range`

except you can provide custom increment/decrement functions.

## Why?

Suppose you have the following Date API:

    type alias Date =

        { year : Int

        , month : Int

        , day : Int

        }

    nextDay : Date -> Date

    prevDay : Date -> Date

and you would like to generate range of dates from 2019-01-01 to 2019-01-07.

`IncrementalList.range` function can be used in a following way:

    dateRange =

        IncrementalList.range prevDay nextDay

    startingDate =

        { year = 2019

        , month = 1

        , day = 1

        }

    dates = dateRange startingDate 5

And if you want range between 2019-12-25 and 2019-01-01 you can use the following:

    dates = dateRange startingDate -7

So, to sum up, this function makes it easy to create range generator of some

custom data type by providing increase/decrease functions.

See more code examples in `IncrementalList.range` function docs.