diff options
| author |  Benjamin Barenblat <bbarenblat@gmail.com> | 2022-01-19 13:11:40 -0500 |
|---|---|---|
| committer | Benjamin Barenblat <bbarenblat@gmail.com> | 2022-01-19 13:31:05 -0500 |
| commit | a9b9e5d0d72c2348580dbac5533b89a45abd8938 (patch) | |
| tree | 0f8113e86df43616baec8570b07acb1537497885 /Types/DesktopNotify.hs | |
| parent | c79473051a8e1647b14f351b72768b74301acc33 (diff) | |
Deal with the Semigroup/Monoid proposal
base-4.11 made Semigroup a superclass of Monoid. Provide Semigroup
implementations for Monoids.
Diffstat (limited to 'Types/DesktopNotify.hs')
| -rw-r--r-- | Types/DesktopNotify.hs | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/Types/DesktopNotify.hs b/Types/DesktopNotify.hs index e6df05ab1..0b2da9377 100644 --- a/Types/DesktopNotify.hs +++ b/Types/DesktopNotify.hs @@ -1,6 +1,7 @@ {- git-annex DesktopNotify type - - Copyright 2014 Joey Hess <id@joeyh.name> + - Copyright 2022 Benjamin Barenblat <bbarenblat@gmail.com> - - Licensed under the GNU GPL version 3 or higher. -} @@ -16,10 +17,12 @@ data DesktopNotify = DesktopNotify } deriving (Show) +instance Semigroup DesktopNotify where + DesktopNotify s1 f1 <> DesktopNotify s2 f2 = + DesktopNotify (s1 || s2) (f1 || f2) + instance Monoid DesktopNotify where mempty = DesktopNotify False False - mappend (DesktopNotify s1 f1) (DesktopNotify s2 f2) = - DesktopNotify (s1 || s2) (f1 || f2) mkNotifyStart :: DesktopNotify mkNotifyStart = DesktopNotify True False |