Copyright	(c) Dong Han 2017-2019 (c) Tao He 2018-2019
License	BSD
Maintainer	winterland1989@gmail.com
Stability	experimental
Portability	non-portable
Safe Haskell	None
Language	Haskell2010

Z.Data.Vector.FlatIntMap

Contents

FlatIntMap backed by sorted vector
fold and traverse
binary & linear search on vectors

Description

This module provides a simple int key value map based on sorted vector and binary search. It's particularly suitable for small sized key value collections such as deserializing intermediate representation. But can also used in various place where insertion and deletion is rare but require fast lookup.

Synopsis

data FlatIntMap v
sortedKeyValues :: FlatIntMap v -> Vector (IPair v)
size :: FlatIntMap v -> Int
null :: FlatIntMap v -> Bool
empty :: FlatIntMap v
map' :: (v -> v') -> FlatIntMap v -> FlatIntMap v'
imap' :: (Int -> v -> v') -> FlatIntMap v -> FlatIntMap v'
pack :: [IPair v] -> FlatIntMap v
packN :: Int -> [IPair v] -> FlatIntMap v
packR :: [IPair v] -> FlatIntMap v
packRN :: Int -> [IPair v] -> FlatIntMap v
unpack :: FlatIntMap v -> [IPair v]
unpackR :: FlatIntMap v -> [IPair v]
packVector :: Vector (IPair v) -> FlatIntMap v
packVectorR :: Vector (IPair v) -> FlatIntMap v
lookup :: Int -> FlatIntMap v -> Maybe v
delete :: Int -> FlatIntMap v -> FlatIntMap v
insert :: Int -> v -> FlatIntMap v -> FlatIntMap v
adjust' :: (v -> v) -> Int -> FlatIntMap v -> FlatIntMap v
merge :: forall v. FlatIntMap v -> FlatIntMap v -> FlatIntMap v
mergeWithKey' :: forall v. (Int -> v -> v -> v) -> FlatIntMap v -> FlatIntMap v -> FlatIntMap v
foldrWithKey :: (Int -> v -> a -> a) -> a -> FlatIntMap v -> a
foldrWithKey' :: (Int -> v -> a -> a) -> a -> FlatIntMap v -> a
foldlWithKey :: (a -> Int -> v -> a) -> a -> FlatIntMap v -> a
foldlWithKey' :: (a -> Int -> v -> a) -> a -> FlatIntMap v -> a
traverseWithKey :: Applicative t => (Int -> a -> t b) -> FlatIntMap a -> t (FlatIntMap b)
binarySearch :: Vector (IPair v) -> Int -> Either Int Int
linearSearch :: Vector (IPair v) -> Int -> Maybe v
linearSearchR :: Vector (IPair v) -> Int -> Maybe v

FlatIntMap backed by sorted vector

data FlatIntMap v Source #

Instances

Functor FlatIntMap Source #
Instance details Defined in Z.Data.Vector.FlatIntMap Methods fmap :: (a -> b) -> FlatIntMap a -> FlatIntMap b # (<$) :: a -> FlatIntMap b -> FlatIntMap a #
Foldable FlatIntMap Source #
Instance details Defined in Z.Data.Vector.FlatIntMap Methods fold :: Monoid m => FlatIntMap m -> m # foldMap :: Monoid m => (a -> m) -> FlatIntMap a -> m # foldr :: (a -> b -> b) -> b -> FlatIntMap a -> b # foldr' :: (a -> b -> b) -> b -> FlatIntMap a -> b # foldl :: (b -> a -> b) -> b -> FlatIntMap a -> b # foldl' :: (b -> a -> b) -> b -> FlatIntMap a -> b # foldr1 :: (a -> a -> a) -> FlatIntMap a -> a # foldl1 :: (a -> a -> a) -> FlatIntMap a -> a # toList :: FlatIntMap a -> [a] # null :: FlatIntMap a -> Bool # length :: FlatIntMap a -> Int # elem :: Eq a => a -> FlatIntMap a -> Bool # maximum :: Ord a => FlatIntMap a -> a # minimum :: Ord a => FlatIntMap a -> a # sum :: Num a => FlatIntMap a -> a # product :: Num a => FlatIntMap a -> a #
Traversable FlatIntMap Source #
Instance details Defined in Z.Data.Vector.FlatIntMap Methods traverse :: Applicative f => (a -> f b) -> FlatIntMap a -> f (FlatIntMap b) # sequenceA :: Applicative f => FlatIntMap (f a) -> f (FlatIntMap a) # mapM :: Monad m => (a -> m b) -> FlatIntMap a -> m (FlatIntMap b) # sequence :: Monad m => FlatIntMap (m a) -> m (FlatIntMap a) #
Eq v => Eq (FlatIntMap v) Source #
Instance details Defined in Z.Data.Vector.FlatIntMap Methods (==) :: FlatIntMap v -> FlatIntMap v -> Bool # (/=) :: FlatIntMap v -> FlatIntMap v -> Bool #
Ord v => Ord (FlatIntMap v) Source #
Instance details Defined in Z.Data.Vector.FlatIntMap Methods compare :: FlatIntMap v -> FlatIntMap v -> Ordering # (<) :: FlatIntMap v -> FlatIntMap v -> Bool # (<=) :: FlatIntMap v -> FlatIntMap v -> Bool # (>) :: FlatIntMap v -> FlatIntMap v -> Bool # (>=) :: FlatIntMap v -> FlatIntMap v -> Bool # max :: FlatIntMap v -> FlatIntMap v -> FlatIntMap v # min :: FlatIntMap v -> FlatIntMap v -> FlatIntMap v #
Show v => Show (FlatIntMap v) Source #
Instance details Defined in Z.Data.Vector.FlatIntMap Methods showsPrec :: Int -> FlatIntMap v -> ShowS # show :: FlatIntMap v -> String # showList :: [FlatIntMap v] -> ShowS #
Semigroup (FlatIntMap v) Source #
Instance details Defined in Z.Data.Vector.FlatIntMap Methods (<>) :: FlatIntMap v -> FlatIntMap v -> FlatIntMap v # sconcat :: NonEmpty (FlatIntMap v) -> FlatIntMap v # stimes :: Integral b => b -> FlatIntMap v -> FlatIntMap v #
Monoid (FlatIntMap v) Source #
Instance details Defined in Z.Data.Vector.FlatIntMap Methods mempty :: FlatIntMap v # mappend :: FlatIntMap v -> FlatIntMap v -> FlatIntMap v # mconcat :: [FlatIntMap v] -> FlatIntMap v #
Arbitrary v => Arbitrary (FlatIntMap v) Source #
Instance details Defined in Z.Data.Vector.FlatIntMap Methods arbitrary :: Gen (FlatIntMap v) # shrink :: FlatIntMap v -> [FlatIntMap v] #
CoArbitrary v => CoArbitrary (FlatIntMap v) Source #
Instance details Defined in Z.Data.Vector.FlatIntMap Methods coarbitrary :: FlatIntMap v -> Gen b -> Gen b #
NFData v => NFData (FlatIntMap v) Source #
Instance details Defined in Z.Data.Vector.FlatIntMap Methods rnf :: FlatIntMap v -> () #
ShowT v => ShowT (FlatIntMap v) Source #
Instance details Defined in Z.Data.Vector.FlatIntMap Methods toTextBuilder :: Int -> FlatIntMap v -> TextBuilder () Source #
FromValue a => FromValue (FlatIntMap a) Source #
Instance details Defined in Z.Data.JSON.Base Methods fromValue :: Value -> Converter (FlatIntMap a) Source #
EncodeJSON a => EncodeJSON (FlatIntMap a) Source #
Instance details Defined in Z.Data.JSON.Base Methods encodeJSON :: FlatIntMap a -> Builder () Source #
ToValue a => ToValue (FlatIntMap a) Source #
Instance details Defined in Z.Data.JSON.Base Methods toValue :: FlatIntMap a -> Value Source #

sortedKeyValues :: FlatIntMap v -> Vector (IPair v) Source #

size :: FlatIntMap v -> Int Source #

null :: FlatIntMap v -> Bool Source #

empty :: FlatIntMap v Source #

O(1) empty flat map.

map' :: (v -> v') -> FlatIntMap v -> FlatIntMap v' Source #

imap' :: (Int -> v -> v') -> FlatIntMap v -> FlatIntMap v' Source #

pack :: [IPair v] -> FlatIntMap v Source #

O(N*logN) Pack list of key values, on key duplication prefer left one.

packN :: Int -> [IPair v] -> FlatIntMap v Source #

O(N*logN) Pack list of key values with suggested size, on key duplication prefer left one.

packR :: [IPair v] -> FlatIntMap v Source #

O(N*logN) Pack list of key values, on key duplication prefer right one.

packRN :: Int -> [IPair v] -> FlatIntMap v Source #

O(N*logN) Pack list of key values with suggested size, on key duplication prefer right one.

unpack :: FlatIntMap v -> [IPair v] Source #

O(N) Unpack key value pairs to a list sorted by keys in ascending order.

This function works with foldr/build fusion in base.

unpackR :: FlatIntMap v -> [IPair v] Source #

O(N) Unpack key value pairs to a list sorted by keys in descending order.

This function works with foldr/build fusion in base.

packVector :: Vector (IPair v) -> FlatIntMap v Source #

O(N*logN) Pack vector of key values, on key duplication prefer left one.

packVectorR :: Vector (IPair v) -> FlatIntMap v Source #

O(N*logN) Pack vector of key values, on key duplication prefer right one.

lookup :: Int -> FlatIntMap v -> Maybe v Source #

O(logN) Binary search on flat map.

delete :: Int -> FlatIntMap v -> FlatIntMap v Source #

O(N) Delete a key value pair by key.

insert :: Int -> v -> FlatIntMap v -> FlatIntMap v Source #

O(N) Insert new key value into map, replace old one if key exists.

adjust' :: (v -> v) -> Int -> FlatIntMap v -> FlatIntMap v Source #

O(N) Modify a value by key.

The value is evaluated to WHNF before writing into map.

merge :: forall v. FlatIntMap v -> FlatIntMap v -> FlatIntMap v Source #

O(n+m) Merge two FlatIntMap, prefer right value on key duplication.

mergeWithKey' :: forall v. (Int -> v -> v -> v) -> FlatIntMap v -> FlatIntMap v -> FlatIntMap v Source #

O(n+m) Merge two FlatIntMap with a merge function.

fold and traverse

foldrWithKey :: (Int -> v -> a -> a) -> a -> FlatIntMap v -> a Source #

O(n) Reduce this map by applying a binary operator to all elements, using the given starting value (typically the right-identity of the operator).

During folding k is in descending order.

foldrWithKey' :: (Int -> v -> a -> a) -> a -> FlatIntMap v -> a Source #

O(n) Reduce this map by applying a binary operator to all elements, using the given starting value (typically the right-identity of the operator).

During folding Int is in descending order.

foldlWithKey :: (a -> Int -> v -> a) -> a -> FlatIntMap v -> a Source #

O(n) Reduce this map by applying a binary operator to all elements, using the given starting value (typically the right-identity of the operator).

During folding Int is in ascending order.

foldlWithKey' :: (a -> Int -> v -> a) -> a -> FlatIntMap v -> a Source #

O(n) Reduce this map by applying a binary operator to all elements, using the given starting value (typically the right-identity of the operator).

During folding Int is in ascending order.

traverseWithKey :: Applicative t => (Int -> a -> t b) -> FlatIntMap a -> t (FlatIntMap b) Source #

O(n). traverseWithKey f s == pack $ traverse ((k, v) -> (,) k $ f k v) (unpack m) That is, behaves exactly like a regular traverse except that the traversing function also has access to the key associated with a value.

binary & linear search on vectors

binarySearch :: Vector (IPair v) -> Int -> Either Int Int Source #

Find the key's index in the vector slice, if key exists return Right, otherwise Left, i.e. the insert index

This function only works on ascending sorted vectors.

linearSearch :: Vector (IPair v) -> Int -> Maybe v Source #

linear scan search from left to right, return the first one if exist.

linearSearchR :: Vector (IPair v) -> Int -> Maybe v Source #

linear scan search from right to left, return the first one if exist.