storable-enum: Wrapper that makes any Enum type Storable
This is a package candidate release! Here you can preview how this package release will appear once published to the main package index (which can be accomplished via the 'maintain' link below). Please note that once a package has been published to the main package index it cannot be undone! Please consult the package uploading documentation for more information.
In foreign function interfaces you will often want to use enumeration types
but defining Storable instances is cumbersome.
This package provides the type Enum.Storable.T w e,
where e.g. Enum.Storable.T Word8 Ordering
means that values of type Ordering are stored in a Word8.
The Storable methods store the numeric values of the enumeration elements
as obtained by fromEnum.
E.g. EQ is stored as 1.
The type itself stores a Haskell enumeration element,
such that GHC can apply all of its optimizations for enumerations.
It is not checked, whether the storage type w is large enough
to hold all admissible numeric values of e.
It is also not checked, whether the storage type w supports negative values
whenever the enumeration of e contains ones.
See the bool8 package for the special case of a Bool stored in a Word8.
Properties
| Versions | 0.0, 0.0 |
|---|---|
| Change log | None available |
| Dependencies | base (>=3 && <5), prelude-compat (>=0.0 && <0.0.1) [details] |
| License | BSD-3-Clause |
| Author | Henning Thielemann |
| Maintainer | haskell@henning-thielemann.de |
| Category | Foreign |
| Source repo | this: darcs get http://hub.darcs.net/thielema/storable-enum --tag 0.0 head: darcs get http://hub.darcs.net/thielema/storable-enum |
| Uploaded | by HenningThielemann at 2019-10-08T15:50:51Z |
Modules
[Index] [Quick Jump]
- Data
Downloads
- storable-enum-0.0.tar.gz [browse] (Cabal source package)
- Package description (as included in the package)
Maintainer's Corner
Package maintainers
For package maintainers and hackage trustees