Add `instance Monoid a => Monoid (Const a b)`

Authored by hvr on Oct 5 2013, 8:40 AM.

Description

Add instance Monoid a => Monoid (Const a b)

For more details, see original proposal at

http://permalink.gmane.org/gmane.comp.lang.haskell.libraries/20369

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>

Details

Committed
hvrOct 5 2013, 8:42 AM
Pushed
bgamariAug 25 2016, 1:39 PM
Parents
rGHCDIFFadd3bae60662: Add fixity declaration for type-level functions.
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