[commit: packages/containers] master: Fix wrong complexity of IntMap.alter. (4634081)
git at git.haskell.org
git at git.haskell.org
Sun Dec 20 16:25:10 UTC 2015
Repository : ssh://git@git.haskell.org/containers
On branch : master
Link : http://git.haskell.org/packages/containers.git/commitdiff/4634081498663590925938663c0223d5e02eb8ff
>---------------------------------------------------------------
commit 4634081498663590925938663c0223d5e02eb8ff
Author: Milan Straka <fox at ucw.cz>
Date: Wed Aug 26 14:11:49 2015 +0200
Fix wrong complexity of IntMap.alter.
This resolves #165.
>---------------------------------------------------------------
4634081498663590925938663c0223d5e02eb8ff
Data/IntMap/Strict.hs | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Data/IntMap/Strict.hs b/Data/IntMap/Strict.hs
index 48ce1be..5165de0 100644
--- a/Data/IntMap/Strict.hs
+++ b/Data/IntMap/Strict.hs
@@ -505,7 +505,7 @@ updateLookupWithKey f0 k0 t0 = k0 `seq` toPair $ go f0 k0 t0
--- | /O(log n)/. The expression (@'alter' f k map@) alters the value @x@ at @k@, or absence thereof.
+-- | /O(min(n,W))/. The expression (@'alter' f k map@) alters the value @x@ at @k@, or absence thereof.
-- 'alter' can be used to insert, delete, or update a value in an 'IntMap'.
-- In short : @'lookup' k ('alter' f k m) = f ('lookup' k m)@.
alter :: (Maybe a -> Maybe a) -> Key -> IntMap a -> IntMap a
More information about the ghc-commits
mailing list