summer: An implementation of extensible products and sums
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- summer-0.3.7.2.tar.gz [browse] (Cabal source package)
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| Versions [RSS] | 0.1.0.0, 0.1.1.0, 0.1.2.0, 0.2.0.1, 0.3.0.0, 0.3.1.0, 0.3.1.1, 0.3.2.0, 0.3.4.0, 0.3.5.0, 0.3.6.0, 0.3.7.0, 0.3.7.1, 0.3.7.2 |
|---|---|
| Change log | CHANGELOG.md |
| Dependencies | base (>=4.12 && <4.18), generics-sop (>=0.5), profunctors (>=5.6), vector (>=0.12) [details] |
| Tested with | ghc ==8.6.3 || ==8.8.3 || ==8.10.1 |
| License | MIT |
| Copyright | 2020 Samuel Schlesinger |
| Author | Samuel Schlesinger |
| Maintainer | sgschlesinger@gmail.com |
| Category | Data |
| Source repo | head: git clone https://github.com/samuelschlesinger/summer |
| Uploaded | by sgschlesinger at 2023-01-08T06:09:38Z |
| Distributions | |
| Downloads | 2068 total (52 in the last 30 days) |
| Rating | (no votes yet) [estimated by Bayesian average] |
| Your Rating | |
| Status | Docs available [build log] Last success reported on 2023-01-08 [all 1 reports] |
Readme for summer-0.3.7.2
[back to package description]summer
Extensible sums and products for Haskell.
x :: Sum '[Int, Bool, Float]
x = Inj True
y :: Sum '[Int, Float, Bool, Char]
y = weaken x
a :: Bool
a = match y (== 10) (== 0.2) id (== 'x')
x' :: Prod '[Int, Float, Bool, Char]
x' = produce $ \f -> f 10 0.2 True 'x'
y' :: Prod '[Bool, Float]
y' = strengthen x'
a' :: Bool
a' = consume y' (\b f -> b && f == 0.2)
q :: Bool
q = select x' $ \b (f :: Float)-> b && f == 0.2
This package is extremely experimental, and is subject to arbitrarily large changes.