coot/free-category
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Fix typos

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Manuel Bärenz 2020-09-07 21:13:09 +02:00 committed by Marcin Szamotulski
parent 963b3f1221
commit b4a67b3489
3 changed files with 8 additions and 8 deletions
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6
README.md
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@ -14,7 +14,7 @@ Free arrows and free Kleisli categories are also included.
Free categories are useful to model state machines in a simple yet type safe Free categories are useful to model state machines in a simple yet type safe
manner. For that purpose `Kleisli` categories are a very useful target which manner. For that purpose `Kleisli` categories are a very useful target which
allows to include monadic computations. This package contains a useful allows to include monadic computations. This package contains a useful
generalisation of `Kliesli` categories captured by `EffectCategory` class generalisation of `Kleisli` categories captured by `EffectCategory` class
(categories with effects), and a (free) transformer which lifts a category to (categories with effects), and a (free) transformer which lifts a category to
a category with effects. a category with effects.
@ -29,8 +29,8 @@ Check performance characteristics of various representations:
## Resources ## Resources
* [LoginStateMachine](https://github.com/coot/free-category/blob/master/examples/src/LoginStateMachine.hs): * [LoginStateMachine](https://github.com/coot/free-category/blob/master/examples/src/LoginStateMachine.hs):
based on [State Machines All The Way based on [State Machines All The Way
Down](https://www.youtube.com/watch?v=xq7ZuSRgCR4) by Edwin Bradly, 2017 You Down](https://www.youtube.com/watch?v=xq7ZuSRgCR4) by Edwin Bradly, 2017.
can run it with `cabal new-run examples:login-state-machine`. You can run it with `cabal new-run examples:login-state-machine`.
* Read more [here](https://coot.me/posts/finite-state-machines.html) on * Read more [here](https://coot.me/posts/finite-state-machines.html) on
a simple example of a finite state machine encoded using a free category a simple example of a finite state machine encoded using a free category
using a simple GADT. using a simple GADT.

2
src/Control/Arrow/Free.hs
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@ -116,7 +116,7 @@ instance FreeAlgebra2 Arr where
-- Free arrows using CSP style -- Free arrows using CSP style
-- --
-- | Free arrow using CPS sytle. -- | Free arrow using CPS style.
-- --
newtype A f a b newtype A f a b
= A { runA :: forall r. Arrow r = A { runA :: forall r. Arrow r

4
src/Control/Category/FreeEffect.hs
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@ -73,8 +73,8 @@ liftEffect :: ( Monad m
=> tr a b -> EffCat m (cat tr) a b => tr a b -> EffCat m (cat tr) a b
liftEffect = liftFree2 . liftFree2 liftEffect = liftFree2 . liftFree2
-- | Fold @'FreeLifing'@ category based on a free category @'cat' tr@ (e.g. -- | Fold @'FreeLifting'@ category based on a free category @'cat' tr@ (e.g.
-- @'Cat' tr@) using a functor @tr x y -> c x y@. -- @'C' tr@) using a functor @tr x y -> c x y@.
-- --
foldNatEffCat foldNatEffCat
:: ( Monad m :: ( Monad m