Convenience Iso and Prism for finitary types.
sheaf
c3868a3a2c
Ensure GHC 9.0 compatibility
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3 years ago | |
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| src | 3 years ago | |
| test | 4 years ago | |
| .gitignore | 4 years ago | |
| .nvimrc | 4 years ago | |
| CHANGELOG.md | 4 years ago | |
| LICENSE.md | 4 years ago | |
| README.md | 4 years ago | |
| Setup.hs | 4 years ago | |
| finitary-optics.cabal | 3 years ago |
README.md
finitary-optics
What's this all about, then?
If a type has an instance of Finitary, we know the type's cardinality n, and
can convert any (non-bottom) inhabitant to a value of Finite n. We can use
this to inter-convert between these types. This can sometimes be useful.
This library provides some optics (specifically a Prism and an Iso)
which help us do this kind of conversion more conveniently.
Sounds good! Can I use it?
We've tested this library on GHCs 8.6.5, 8.8.3 and 8.10.1, on GNU/Linux x86_64. If you use this library on any other platforms, let us know how it goes - especially if something breaks!
License
This library is under the GNU General Public License, version 3 or later (SPDX
code GPL-3.0-or-later). For more details, see the LICENSE.md file.