show-combinators
Combinators to write Show instances
https://github.com/Lysxia/show-combinators#readme
| Version on this page: | 0.1.1.0@rev:1 |
| LTS Haskell 22.37: | 0.2.0.0@rev:2 |
| Stackage Nightly 2024-10-11: | 0.2.0.0@rev:2 |
| Latest on Hackage: | 0.2.0.0@rev:2 |
Maintained by [email protected]
This version can be pinned in stack with:
show-combinators-0.1.1.0@sha256:c79bdfc7274e573af8ef098bd761d85e2b5b5306f6781cfd41a1bfed08ef26ff,1248Module documentation for 0.1.1.0
- Text
- Text.Show
Depends on 1 package(full list with versions):
Used by 1 package in lts-15.3(full list with versions):
Show combinators 
A minimal set of convenient combinators to write Show instances.
data MyType a
= C a a -- a regular constructor
| a :+: a -- an infix constructor
| R { f1 :: a, f2 :: a } -- a record
infixl 4 :+:
instance Show a => Show (MyType a) where
showsPrec = flip precShows where
precShows (C a b) = showCon "C" @| a @| b
precShows (c :+: d) = showInfix ":+:" 4 c d
precShows (R {f1 = e, f2 = f}) =
showRecord "R" ("f1" .=. e &| "f2" .=. f)