Commit c4a9dcad authored by Ben Gamari's avatar Ben Gamari Committed by Ben Gamari
Browse files

FastString: Supply mconcat implementation

Test Plan: Validate

Reviewers: austin

Subscribers: thomie

Differential Revision: https://phabricator.haskell.org/D2389
parent 15751f26
......@@ -198,6 +198,7 @@ instance IsString FastString where
instance Monoid FastString where
mempty = nilFS
mappend = appendFS
mconcat = concatFS
instance Show FastString where
show fs = show (unpackFS fs)
......
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