utility-ht: Various small helper functions for Lists, Maybes, Tuples, Functions

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Various small helper functions for Lists, Maybes, Tuples, Functions. Some of these functions are improved implementations of standard functions. They have the same name as their standard counterparts. Others are equivalent to functions from the base package, but if you import them from this utility package then you can write code that runs on older GHC versions or other compilers like MicroHs, Hugs and JHC.

All modules are plain Haskell 98. The package depends exclusively on the base package and only that portions of base that are simple to port. Thus you do not risk a dependency avalanche by importing it. However, further splitting the base package might invalidate this statement.

The package defines no custom data types.

Alternative packages: Useful, MissingH

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Properties

Versions	0.0.1, 0.0.2, 0.0.3, 0.0.4, 0.0.5, 0.0.5.1, 0.0.6, 0.0.7, 0.0.7.1, 0.0.8, 0.0.9, 0.0.10, 0.0.11, 0.0.12, 0.0.13, 0.0.14, 0.0.15, 0.0.16, 0.0.17, 0.0.17.1, 0.0.17.2, 0.0.18
Change log	None available
Dependencies	base (>=2 && <5) [details]
License	BSD-3-Clause
Author	Henning Thielemann <haskell@henning-thielemann.de>
Maintainer	Henning Thielemann <haskell@henning-thielemann.de>
Category	Data, List
Source repo	head: darcs get http://code.haskell.org/~thielema/utility/ this: darcs get http://code.haskell.org/~thielema/utility/ --tag 0.0.18
Uploaded	by HenningThielemann at 2025-12-07T10:03:08Z

Modules

Control
- Applicative
  - Control.Applicative.HT
- Functor
  - Control.Functor.HT
- Monad
  - Control.Monad.HT
Data
- Bits
  - Data.Bits.HT
- Bool
  - Data.Bool.HT
- Either
  - Data.Either.HT
- Eq
  - Data.Eq.HT
- Function
  - Data.Function.HT
- Ix
  - Data.Ix.Enum
- List
  - Data.List.HT
  - Data.List.Key
  - Data.List.Match
  - Reverse
    - Data.List.Reverse.StrictElement
    - Data.List.Reverse.StrictSpine
- Maybe
  - Data.Maybe.HT
- Monoid
  - Data.Monoid.HT
- Ord
  - Data.Ord.HT
- Record
  - Data.Record.HT
- Strictness
  - Data.Strictness.HT
- String
  - Data.String.HT
- Tuple
  - Data.Tuple.HT
  - Data.Tuple.Lazy
  - Data.Tuple.Strict
Text
- Read
  - Text.Read.HT
- Show
  - Text.Show.HT

Downloads

utility-ht-0.0.18.tar.gz [browse] (Cabal source package)
Package description (as included in the package)

Maintainer's Corner

Package maintainers

HenningThielemann

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Readme for utility-ht-0.0.18

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I started this package because there were requests for adding new utility functions to the @base@ package, often to the Data.List module. However, adding a function to Data.List takes a long time and if I actually import it, my package depends on a new GHC version just for the sake of a simple utility function. It seemed more appropriate to me to collect such functions in a simple third-party package.

Over the time, however, many but not all functions were added to @base@ and are now in wide use. Some functions even got fancy optimizations in @base@. Thus some functions in this package may look outdated. However, I keep them for compatibility. So far, I have not removed any function.

The package contains contributions to Data.List by David Feuer.