zero: Semigroups with absorption
Monoid
is a Semigroup
glued with a neutral element
called mempty
. In the same idea, Zero
is a Semigroup
glued with an absorbing element called zero
.
Keep in mind that Zero
requires Semigroup
. If you have
Semigroup
defined to work with Monoid
, you might end up
with no way to implement Zero
. That’s why the Semigroup
instance for Maybe
is confusing, because it relies on
Monoid
, and cannot be used with Zero
. Success
is the
Zero
equivalent of Maybe
+ Monoid
.
Downloads
- zero-0.1.5.tar.gz [browse] (Cabal source package)
- Package description (as included in the package)
Maintainer's Corner
For package maintainers and hackage trustees
Candidates
Versions [RSS] | 0.1, 0.1.1, 0.1.2, 0.1.3, 0.1.3.1, 0.1.4, 0.1.5 |
---|---|
Change log | CHANGELOG.md |
Dependencies | base (>=4.8 && <5.0), semigroups (>=0.16 && <0.20) [details] |
License | BSD-3-Clause |
Copyright | Dimitri Sabadie |
Author | Dimitri Sabadie <dimitri.sabadie@gmail.com> |
Maintainer | Dimitri Sabadie <dimitri.sabadie@gmail.com> |
Category | Data |
Home page | https://github.com/phaazon/zero |
Bug tracker | https://github.com/phaazon/zero/issues |
Source repo | head: git clone https://github.com/phaazon/zero.git |
Uploaded | by DimitriSabadie at 2019-05-16T21:02:00Z |
Distributions | |
Reverse Dependencies | 1 direct, 1 indirect [details] |
Downloads | 4890 total (14 in the last 30 days) |
Rating | (no votes yet) [estimated by Bayesian average] |
Your Rating | |
Status | Docs available [build log] Last success reported on 2019-05-16 [all 1 reports] |