https://github.com/acatton/haskell-non-empty-text

Non Empty Text for Haskell
https://github.com/acatton/haskell-non-empty-text

Last synced: 6 months ago
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Non Empty Text for Haskell

• Host: GitHub
• URL: https://github.com/acatton/haskell-non-empty-text
• Owner: acatton
• License: wtfpl
• Created: 2018-02-15T23:58:16.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2022-02-23T22:32:52.000Z (over 4 years ago)
• Last Synced: 2025-04-10T00:56:17.162Z (over 1 year ago)
• Language: Haskell
• Size: 12.7 KB
• Stars: 4
• Watchers: 2
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
Non Empty Text

==============

Typesafe thin wrapper around `Data.Text` to make impossible to be empty (to

always hold at least on character)

Roadmap

-------

### Done

  * Typesafe wrapper around Text

  * `Data.Text` ↔ `Data.NonEmptyText` back and forth conversion.

  * Basic functions: `(un)cons`, `head`, `tail`, `last`, `length`

  * Text equivalent of `null` -> `isSingleton`.

### To do

  * `Item` class instance

  * Transformations (most importantly `map`, `intercalate`, `reverse`)

  * Case conversions

  * Justification

  * Folds (especially, total `fold1` functions)

  * Scans

  * Substrings

_For now all of this can be done by calling `toText`, however the `Text` type

doesn't ensure that all of this functions return `NonEmptyText`._

_Another solution is to use `fromText .  . toText`, but this forces

the programmer to handle the `Nothing` case, which is for many of these functions

unnecessary._

FAQ

---

### Why not text1?

[`text1`](https://hackage.haskell.org/package/text1) basically does the same

thing than this package, and even more. It's also a great package.

However text1 has a lot of dependencies, and use [an alternative

homebrewed prelude](https://hackage.haskell.org/package/papa).

`non-empty-text` is aiming towards a minimal, thin wrapper. The goal is to do

the same thing as the [`text`](https://hackage.haskell.org/package/text), with

only `text` and `base` as dependencies, no extension.