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| author | Ryan Scott <ryan.gl.scott@gmail.com> | 2016-06-04 17:59:47 -0400 |
|---|---|---|
| committer | Ryan Scott <ryan.gl.scott@gmail.com> | 2016-06-04 17:59:48 -0400 |
| commit | 59651173a52e2400f965e38acd0beb9d0cc14cfe (patch) | |
| tree | bbcf735fdbf1a7f1975f37b3c5b887a2933016cf /libraries/base/Data/Type/Equality.hs | |
| parent | b948a1da7a3929160cb7cb8d6cf2fe79c3081d0a (diff) | |
| download | haskell-59651173a52e2400f965e38acd0beb9d0cc14cfe.tar.gz | |
Replace hand-written Bounded instances with derived ones
Summary:
The spiritual successor to D2291, since deriving `Bounded` instances
in `GHC.Enum` wasn't possible prior to changes made in that Diff.
This Diff finds every manually implemented `Bounded` instance in `base` that is
completely equivalent to the derived instances, and replaces it.
Reviewers: bgamari, goldfire, austin, hvr
Reviewed By: austin, hvr
Subscribers: thomie, rwbarton
Differential Revision: https://phabricator.haskell.org/D2301
Diffstat (limited to 'libraries/base/Data/Type/Equality.hs')
| -rw-r--r-- | libraries/base/Data/Type/Equality.hs | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/libraries/base/Data/Type/Equality.hs b/libraries/base/Data/Type/Equality.hs index 19c9bcacf2..b22b39d921 100644 --- a/libraries/base/Data/Type/Equality.hs +++ b/libraries/base/Data/Type/Equality.hs @@ -131,9 +131,7 @@ instance a ~ b => Enum (a :~: b) where fromEnum Refl = 0 -instance a ~ b => Bounded (a :~: b) where - minBound = Refl - maxBound = Refl +deriving instance a ~ b => Bounded (a :~: b) -- | This class contains types where you can learn the equality of two types -- from information contained in /terms/. Typically, only singleton types should |