all keys in t1 are in tree t2, and when f returns True when O(n*log n). Note that the key passed to f is the same key passed to insertWithKey. O(n). filterWithKey f could be used for any f. map :: (a -> b) -> Map k a -> Map k b Source #. Apply a function to just some elements of a list. O(log n). in ascending order. site. In particular, the functions in this module obey the following law: When deciding if this is the correct data structure to use, consider: For a walkthrough of the most commonly used functions see the Take while a predicate on the keys holds. applied to their respective values. insertWith :: Ord k => (a -> a -> a) -> k -> a -> Map k a -> Map k a Source #. Subject to list (unions == foldl union empty). differenceWithKey and intersectionWithKey as, When calling mergeWithKey combine only1 only2, a function combining two Book list Plat maps Fees Indexed data from November, 1994 New records added in real-time; Scanned images from October, 2008; Haskell County is a county located in the southeast quadrant of the U.S. state of Oklahoma. Lookup the value at a key in the map. Traverse keys/values and collect the Just results. map contains all elements that satisfy the predicate, the second all drop :: Int -> Map k a -> Map k a Source #. This The function returns changed value, if it is updated. updateMax :: (a -> Maybe a) -> Map k a -> Map k a Source #. the value at key k or returns default value def Convert the map to a list of key/value pairs. mapMaybeWithKey :: (k -> a -> Maybe b) -> Map k a -> Map k b Source #. at k (if it is in the map). found in a Set. mapKeys f s is the map obtained by applying f to each key of s. The size of the result may be smaller if f maps two or more distinct insertWithKey :: Ord k => (k -> a -> a -> a) -> k -> a -> Map k a -> Map k a Source #. When two equal keys are Subject to list fusion. No security, no password. original keys is retained. O(m*log(n/m + 1)), m <= n. Lookup and update. O(n). The function mapAccumR threads an accumulating In general, these rules the functor is non-trivial and key comparison is not particularly cheap, The Town Calendar is presented for reference purposes only, and is … This function has better performance than mapKeys. alterF can be used to inspect, insert, delete, or update a value in a Map. is strictly monotonic. Haskell, TX 79521 Subway 400 N Ave. E Wes T Go C-Store, Haskell, TX 79521 Laredo Taco Company 106 N 1st St E , Haskell, TX 79521 Double A Drive In 1103 N 1st St , Haskell, TX 79521 Broken Arrow Bar & Grill 1006 S Avenue E , Haskell, TX 79521 O(log n). the element is deleted. returned will be in ascending order (all elements in the first submap less than all O(log n). The union of a list of maps, with a combining operation: The precondition (input list is ascending) is not checked. Best Dining in Haskell, Texas: See 49 Tripadvisor traveler reviews of 10 Haskell restaurants and search by cuisine, price, location, and more. invalid index is used. At. +bytestring concat Fold the keys and values in the map using the given right-associative traverseMaybeWithKey :: Applicative f => (k -> a -> f (Maybe b)) -> Map k a -> f (Map k b) Source #. evaluated before using the result in the next application. The implementation of Map is based on size balanced binary trees (or O(n*log n). Find the value at a key. (ie. insert :: Ord k => k -> a -> Map k a -> Map k a Source #. intersectionWithKey :: Ord k => (k -> a -> b -> c) -> Map k a -> Map k b -> Map k c Source #, mergeWithKey :: Ord k => (k -> a -> b -> Maybe c) -> (Map k a -> Map k c) -> (Map k b -> Map k c) -> Map k a -> Map k b -> Map k c Source #. The user is responsible for ensuring that for all keys j and k in the map, O(log n). Haskell by Example: Maps original import Data.Map (Map, (!)) The expression (updateWithKey f k map) updates the Fold the keys and values in the map using the given monoid, such that. When used with trivial O(log n). the map stripped of that element, or Nothing if passed an empty map. Retrieve an element by its index, i.e. foldlWithKey :: (a -> k -> b -> a) -> a -> Map k b -> a Source #. Is the key a member of the map? foldl' :: (a -> b -> a) -> a -> Map k b -> a Source #. The user is responsible for ensuring that for all keys j and k in the map, If the index is out of range (less than zero, If the key does exist, the function will Example searches: map (a -> b) -> [a] -> [b] Ord a => [a] -> [a] Data.Set.insert +bytestring concat Enter your own search at the top of the page. i.e. private copy of the Identity type. Find smallest key greater or equal to the given one and return with the smallest keys. (!?) values stored in all maps in the results will be in WHNF once those maps improve performance. O(log n). elements in the second, and so on). and how to integrate Hoogle with Firefox/Emacs/Vim etc. including further details on search queries, how to install Hoogle as a command line application difference :: Ord k => Map k a -> Map k b -> Map k a Source #. on Stackage by either function name, or by approximate type signature. foldrWithKey f z == foldr (uncurry f) z . the sequence sorted by keys. O(log n). unionWith :: Ord k => (a -> a -> a) -> Map k a -> Map k a -> Map k a Source #. (\\) :: Ord k => Map k a -> Map k b -> Map k a infixl 9 Source #, differenceWith :: Ord k => (a -> b -> Maybe a) -> Map k a -> Map k b -> Map k a Source #. This is how to define insertLookup using insertLookupWithKey: delete :: Ord k => k -> Map k a -> Map k a Source #. Retrieves the value associated with minimal key of the Difference with a combining function. The output tree being a sub-graph with a root vertex, no cycles, and includes every vertex (reachable from the root) in the graph but not necessarily all of the graph’s edges. :: Ord k => Map k a -> k -> a infixl 9 Source #. them in a Map. The expression (splitLookup k map) splits a map just However, it is guaranteed that the pieces The precondition (input list is ascending) is not checked. So grab a copy of GHCnow, from your package system, or the GHC home page. the number of entries in the map. empty map. Haskell serves clients from strategic points within North America, with significant expertise in Latin American, European, Asian and Caribbean marketplaces. evaluated before using the result in the next application. Delete and find the minimal element. Start up GHCi: The interpreter now waits for your code fragments. https://github.com/haskell-perf/dictionaries. traverseWithKey f m == fromList $ traverse ((k, v) -> (v' -> v' `seq` (k,v')) $ f k v) (toList m) future without notice. O(log n). mapAccum :: (a -> b -> (a, c)) -> a -> Map k b -> (a, Map k c) Source #. adjustWithKey :: Ord k => (k -> a -> a) -> k -> Map k a -> Map k a Source #. Find smallest key greater than the given one and return the See also fromAscList. mapKeysWith c f s is the map obtained by applying f to each key of s. The size of the result may be smaller if f maps two or more distinct Subject to list fusion. Users of the information displayed in this map service are strongly cautioned to verify all information before making any decisions. O(log n). The precondition is not checked. by its zero-based Assuming you only want to apply function f to elements for which function p returns true, you can do this: map (\ x-> if p x then f x else x) xs. in ascending key order. Violation of this Is the key not a member of the map? Haskell, TX area code map, list, and phone lookup. The sole exception is that when using O(n). Convert the map to a list of key/value pairs where the keys lookupGE :: Ord k => k -> Map k v -> Maybe (k, v) Source #. two maps as arguments and combine them, such as union and intersection, Build a map from an ascending list in linear time with a Themost widely used implementation of Haskell currently is GHC, whichprovides both an optimising native code compiler, and an interactivebytecode interpreter. If it returns Nothing, the element is discarded (proper set difference). binary operator, such that foldl f z == foldl f z . O(n). Best Dining in Haskell, Oklahoma: See 45 Tripadvisor traveler reviews of 7 Haskell restaurants and search by cuisine, price, location, and more. In short : lookup k (alter f k m) = f (lookup k m). fromDistinctAscList :: [(k, a)] -> Map k a Source #. Drop a given number of entries in key order, beginning insertWith const. mapWithKey :: (k -> a -> b) -> Map k a -> Map k b Source #, traverseWithKey :: Applicative t => (k -> a -> t b) -> Map k a -> t (Map k b) Source #. Data.Set.insert email me, or add an entry to my applied to their respective values. The precondition (input list is descending) is not checked. O(n). The expression (alterF f k map) alters the value x at k, or absence thereof. Returns Nothing if the map is empty. updateMin :: (a -> Maybe a) -> Map k a -> Map k a Source #. unionsWith :: (Foldable f, Ord k) => (a -> a -> a) -> f (Map k a) -> Map k a Source #. or Nothing if the key isn't in the map. I'll be using GHC (or its interactive front end, GHCi, for all code. mapKeysWith :: Ord k2 => (a -> a -> a) -> (k1 -> k2) -> Map k1 a -> Map k2 a Source #. (ie. withoutKeys :: Ord k => Map k a -> Set k -> Map k a Source #. that the Functor, Traversable and Data instances are the same as for toAscList. fromListWithKey :: Ord k => (k -> a -> a -> a) -> [(k, a)] -> Map k a Source #. the sequence sorted by keys. unions :: (Foldable f, Ord k) => f (Map k a) -> Map k a Source #. The precondition (input list is ascending) is not checked. may depend on the internal structures of its inputs. Search Haskell County, TX property records by Owner Name, Account Number, or Street Address. The minimal key of the map. The user is responsible for ensuring that for all keys j and k in the map, member :: Ord k => k -> Map k a -> Bool Source #. (a -> b) -> [a] -> [b] O(n). it is the fastest way. can be found at https://github.com/haskell-perf/dictionaries. Find the value at a key. expressions are all True: isProperSubmapOf :: (Ord k, Eq a) => Map k a -> Map k a -> Bool Source #. binary operator, such that foldr f z == foldr f z . Find largest key smaller or equal to the given one and return In this case the associated values will be are in descending order. Please When laziness is required, use the functions in Data.Map.Lazy. The precondition (input list is descending) is not checked. The expression (insertLookupWithKey f k x map) is a pair where the first element is equal to (lookup k map) and the second element equal to (insertWithKey f k x map). findIndex :: Ord k => k -> Map k a -> Int Source #. findWithDefault :: Ord k => a -> k -> Map k a -> a Source #. The Haskell Report defines no laws for Eq. Update a value at a specific key with the result of the provided function. values to the, a nonempty subtree present only in the first map is passed to, a nonempty subtree present only in the second map is passed to. suspended values (thunks). toAscList :: Map k a -> [(k, a)] Source #. notMember :: Ord k => k -> Map k a -> Bool Source #. argument through the map in ascending order of keys. the corresponding (key, value) pair. Build a map from a list of key/value pairs with a combining function. filter :: (a -> Bool) -> Map k a -> Map k a Source #. a very large fraction of the time, you might consider using a Return all keys of the map in ascending order. Map a function over all values in the map. O(log n). A strict version of foldr. The size of a Map must not exceed maxBound::Int. O(log n). Build a map from a descending list in linear time with a combining function for equal keys. O(log n). fromDescListWithKey :: Eq k => (k -> a -> a -> a) -> [(k, a)] -> Map k a Source #. O(n). O(m*log(n/m + 1)), m <= n. Defined as (isProperSubmapOf = isProperSubmapOfBy (==)). Search. j < k ==> p j >= p k. Note: if p is not actually antitone, then spanAntitone will split the map mapKeys :: Ord k2 => (k1 -> k2) -> Map k1 a -> Map k2 a Source #. See also split. fromDescListWith :: Eq k => (a -> a -> a) -> [(k, a)] -> Map k a Source #. O(n). If you don't care about ordering, consider use, Guy Blelloch, Daniel Ferizovic, and Yihan Sun, will insert the pair (key, value) into mp if key does O(log n). Drop while a predicate on the keys holds. Map values and separate the Left and Right results. If trees of bounded balance) as described by: Bounds for union, intersection, and difference are as given foldrWithKey' :: (k -> a -> b -> b) -> b -> Map k a -> b Source #. Decompose a map into pieces based on the structure of the underlying O(n*log n). If it returns Nothing, the element is discarded (proper set difference). Any key equal to k is found in neither map1 nor map2. The City of Haskell is Located in the state of OK. We have compiled the ultimate Database of phone numbers from around the state and country to help you locate any lost friends, relatives or family members. O(n). Subject to list fusion. O(log n). NE, Ste. functors like Identity and Const, it is often slightly slower than Returns an empty map if the map is empty. This We offer the ability to search by first name, last name, phone number, or business name. 400 Atlanta, GA 30345; Beloit O(n*log n). combining function for equal keys. O(n). O(log n). Return all key/value pairs in the map As of … The expression (insertLookupWithKey f k x map) is a pair where the first element is equal to (lookup k map) and the second element equal to (insertWithKey f k x map). Hoogle is a Haskell API search engine, which allows you to search the Haskell libraries on Stackage by either function name, or by approximate type signature. fromListWith :: Ord k => (a -> a -> a) -> [(k, a)] -> Map k a Source #. evaluated before using the result in the next application. This function is defined as (isSubmapOf = isSubmapOfBy (==)). Update the value at the minimal key. O(n). O(n). Filter all values that satisfy the predicate. See also fromAscListWithKey. The index is a number from 0 up to, but not If the key does exist, the function will Hoogle is a Haskell API search engine, which allows you to search the Haskell libraries at some unspecified point where the predicate switches from holding to not insertWith f key value mp function is strict in the starting value. O(m*log(n/m + 1)), m <= n. Is this a proper submap? Subject to list fusion. fromAscListWith :: Eq k => (a -> a -> a) -> [(k, a)] -> Map k a Source #. it returns (Just y), the element is updated with a new value y. differenceWithKey :: Ord k => (k -> a -> b -> Maybe a) -> Map k a -> Map k b -> Map k a Source #. a member of the map, the original map is returned. O(n). by, liftEq2 :: (a -> b -> Bool) -> (c -> d -> Bool) -> Map a c -> Map b d -> Bool #, liftCompare2 :: (a -> b -> Ordering) -> (c -> d -> Ordering) -> Map a c -> Map b d -> Ordering #, liftShowsPrec2 :: (Int -> a -> ShowS) -> ([a] -> ShowS) -> (Int -> b -> ShowS) -> ([b] -> ShowS) -> Int -> Map a b -> ShowS #, liftShowList2 :: (Int -> a -> ShowS) -> ([a] -> ShowS) -> (Int -> b -> ShowS) -> ([b] -> ShowS) -> [Map a b] -> ShowS #, foldMap :: Monoid m => (a -> m) -> Map k a -> m #, foldr :: (a -> b -> b) -> b -> Map k a -> b #, foldr' :: (a -> b -> b) -> b -> Map k a -> b #, foldl :: (b -> a -> b) -> b -> Map k a -> b #, foldl' :: (b -> a -> b) -> b -> Map k a -> b #, foldr1 :: (a -> a -> a) -> Map k a -> a #, foldl1 :: (a -> a -> a) -> Map k a -> a #, traverse :: Applicative f => (a -> f b) -> Map k a -> f (Map k b) #, sequenceA :: Applicative f => Map k (f a) -> f (Map k a) #, mapM :: Monad m => (a -> m b) -> Map k a -> m (Map k b) #, sequence :: Monad m => Map k (m a) -> m (Map k a) #, liftEq :: (a -> b -> Bool) -> Map k a -> Map k b -> Bool #, liftCompare :: (a -> b -> Ordering) -> Map k a -> Map k b -> Ordering #, liftReadsPrec :: (Int -> ReadS a) -> ReadS [a] -> Int -> ReadS (Map k a) #, liftReadList :: (Int -> ReadS a) -> ReadS [a] -> ReadS [Map k a] #, liftReadPrec :: ReadPrec a -> ReadPrec [a] -> ReadPrec (Map k a) #, liftReadListPrec :: ReadPrec a -> ReadPrec [a] -> ReadPrec [Map k a] #, liftShowsPrec :: (Int -> a -> ShowS) -> ([a] -> ShowS) -> Int -> Map k a -> ShowS #, liftShowList :: (Int -> a -> ShowS) -> ([a] -> ShowS) -> [Map k a] -> ShowS #, fromList :: [Item (Map k v)] -> Map k v #, fromListN :: Int -> [Item (Map k v)] -> Map k v #, gfoldl :: (forall d b. This can be an asymptotically faster than foldrWithKey or foldlWithKey for some monoids. Delete the minimal key. a member of the map. => Map k a -> String Source #, showTreeWith :: Whoops "showTreeWith has moved to Data.Map.Internal.Debug.showTreeWith." O(log n). O(n). An alias for toAscList. deleted. Jacksonville (Headquarters) 904.791.4500 info@haskell.com 111 Riverside Ave. Jacksonville, FL 32202; Atlanta 678.328.2888 800.622.4326 2800 Century Pkwy. fusion. If the list contains more than one value for the same key, the last value deleteFindMax :: Map k a -> ((k, a), Map k a) Source #. lookup :: Ord k => k -> Map k a -> Maybe a Source #. ", if a key is present in both maps, it is passed with both corresponding List of all area codes in Haskell, TX. Fold the values in the map using the given right-associative Example searches: the keys in map1 are smaller than k and the keys in map2 larger than k. function is strict in the starting value. including, the size of the map. Jump to Advanced Search. forced before they are installed in the result map. Other people might choose the same nickname. partitionWithKey :: (k -> a -> Bool) -> Map k a -> (Map k a, Map k a) Source #, takeWhileAntitone :: (k -> Bool) -> Map k a -> Map k a Source #. Users should Functions that take foldlWithKey' :: (a -> k -> b -> a) -> a -> Map k b -> a Source #. undefined. O(m*log(n/m + 1)), m <= n. Restrict a Map to only those keys O(m*log(n/m + 1)), m <= n. Intersection of two maps. deleteFindMin :: Map k a -> ((k, a), Map k a) Source #. Data b => b -> b) -> Map k a -> Map k a #, gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Map k a -> r #, gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Map k a -> r #, gmapQ :: (forall d. Data d => d -> u) -> Map k a -> [u] #, gmapQi :: Int -> (forall d. Data d => d -> u) -> Map k a -> u #, gmapM :: Monad m => (forall d. Data d => d -> m d) -> Map k a -> m (Map k a) #, gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Map k a -> m (Map k a) #, gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Map k a -> m (Map k a) #, compare :: Map k v -> Map k v -> Ordering #, sconcat :: NonEmpty (Map k v) -> Map k v #, stimes :: Integral b => b -> Map k v -> Map k v #, mappend :: Map k v -> Map k v -> Map k v #, fromSet :: (k -> a) -> Set k -> Map k a Source #. The expression (findWithDefault def k map) returns bug tracker. holding (where the predicate is seen to hold before the first key and to fail The expression (union t1 t2) takes the left-biased union of t1 and t2. only2 are id and const empty, but for example map f or O(m*log(n/m + 1)), m <= n. Difference of two maps. This information is not certified. Build a map from a list of key/value pairs. O(log n). Returns Nothing when the element can not be found. combined using c. The value at the greater of the two original keys Return data in the first map for the keys existing in both maps. mapKeysMonotonic f s == mapKeys f s, but works only when f O(n). alterF :: (Functor f, Ord k) => (Maybe a -> f (Maybe a)) -> k -> Map k a -> f (Map k a) Source #. Each application of the operator is Benchmarks comparing Data.Map.Strict with other dictionary implementations foldr' :: (a -> b -> b) -> b -> Map k a -> b Source #. Haskell, OK 74436 Pizza Place 101 W Main St , Haskell, OK 74436 Simple Simon's Pizza 702 N Broadway Ave , Haskell, OK 74436 Savastano's Pizzeria 8211 E Regal Pl , Tulsa, OK 74133 The Cheesecake Factory 8711 E 71st St , Tulsa, OK 74133 Return all elements of the map in the ascending order of their keys. not exist in the map. mapAccumWithKey :: (a -> k -> b -> (a, c)) -> a -> Map k b -> (a, Map k c) Source #. This module includes GHC rewrite rules to optimize alterF for Map keys/values and separate the Left and Right results. O(n). Subject to list fusion. Like some languages Haskell can be both compiled and interpreted. O(n+m). O(n). Map values and collect the Just results. O(log n). The index is a number from 0 up to, but not Delete and find the maximal element. deleteAt :: Int -> Map k a -> Map k a Source #. when the key is not in the map. Build a map from an ascending list in linear time. When the key is not fromDescList :: Eq k => [(k, a)] -> Map k a Source #. If the keys of the list are ordered, linear-time implementation is used, the Data.Map.Lazy module, so if they are used the resulting maps may contain foldMapWithKey :: Monoid m => (k -> a -> m) -> Map k a -> m Source #, O(n). The expression (update f k map) updates the value x after the last key). ghci> Map.lookup "patsy" $ phoneBookToMap phoneBook "827-9162, 943-2929, 493-2928" ghci> Map.lookup "wendy" $ phoneBookToMap phoneBook "939-8282" ghci> Map.lookup "betty" $ phoneBookToMap phoneBook "342-2492, 555-2938" If a duplicate key is found, the function we pass is used to combine the values of those keys into some other value. for the key is retained. Combines insert operation with old value retrieval. The precondition is not checked. O(n). j < k ==> p j >= p k. See note at spanAntitone. The Hoogle manual contains more details, splitAt :: Int -> Map k a -> (Map k a, Map k a) Source #. Input: lookup 'c' [('a',0),('b',1),('c',2)] Output: Just 2 Example 2. O(n). The expression (isSubmapOfBy f t1 t2) returns True if See also updateWithKey. For legal ownership verification contact Haskell County Appraisal District. a member of the map, the original map is returned. If than zero, greater or equal to size of the map), error is called. fromAscList :: Eq k => [(k, a)] -> Map k a Source #. This O(n). If the index is out of range (less O(log n). showTree :: Whoops "showTree has moved to Data.Map.Internal.Debug.showTree." That is, it behaves much like a regular traverse except that the traversing This is usually more efficient when laziness is not Calls error when an insertWithKey f key value mp the Const and Identity functors. Split a map at a particular index. map, and the map stripped of that element, or Nothing if passed an Pro members in Haskell County, TX can access Advanced Search criteria and the Interactive GIS Map.