Non-empty values of `Data.Text`. https://github.com/qfpl/text1

Latest on Hackage:0.0.6

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BSD3 licensed and maintained by Queensland Functional Programming Lab <oᴉ˙ldɟb@llǝʞsɐɥ>

Non-empty values of Data.Text.



  • Remove dependency on papa
  • Support GHC versions back to GHC 7.4


  • Delete instance Cons Text1 Text1 Char Char. Issue #3
  • Delete instance Snoc Text1 Text1 Char Char. Issue #3
  • Introduce instance Cons (Maybe Text1) (Maybe Text1) Char Char.
  • Introduce instance Snoc (Maybe Text1) (Maybe Text1) Char Char.
  • instance IsText (Maybe Text1)
  • isText1 :: Iso' Text (Maybe Text1)`


  • Tests.
  • tpacked1 and tunpacked1.
  • AsText1 type-class and instances.
  • Fix bug in compareLength.
  • Fix bug in last1.


  • Fix issue #1 in init1
  • Rename functions to have 1 suffix.
  • Implement unsnoc.
  • _init1 and _tail1 lenses.
  • Remove functions in favour of type-class implementations.
  • Reversing instance.
  • AsSingle type-class and instances.
  • OneAnd type-class and instances.


  • Initial version.
Depends on 5 packages:
Used by 1 package:
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