public final class LinkedHashMap<K,V> extends Object implements Map<K,V>, Serializable
LinkedHashMap
implementation that has predictable (insertion-order) iteration.Modifier and Type | Method and Description |
---|---|
<K2,V2> LinkedHashMap<K2,V2> |
bimap(Function<? super K,? extends K2> keyMapper,
Function<? super V,? extends V2> valueMapper)
Maps this
Map to a new Map with different component type by applying a function to its elements. |
static <K,V> Collector<Tuple2<K,V>,ArrayList<Tuple2<K,V>>,LinkedHashMap<K,V>> |
collector()
Returns a
Collector which may be used in conjunction with
Stream.collect(java.util.stream.Collector) to obtain a LinkedHashMap . |
static <K,V,T extends V> |
collector(Function<? super T,? extends K> keyMapper)
Returns a
Collector which may be used in conjunction with
Stream.collect(java.util.stream.Collector) to obtain a LinkedHashMap . |
static <K,V,T> Collector<T,ArrayList<T>,LinkedHashMap<K,V>> |
collector(Function<? super T,? extends K> keyMapper,
Function<? super T,? extends V> valueMapper)
Returns a
Collector which may be used in conjunction with
Stream.collect(java.util.stream.Collector) to obtain a LinkedHashMap . |
Tuple2<V,LinkedHashMap<K,V>> |
computeIfAbsent(K key,
Function<? super K,? extends V> mappingFunction)
If the specified key is not already associated with a value,
attempts to compute its value using the given mapping
function and enters it into this map.
|
Tuple2<Option<V>,LinkedHashMap<K,V>> |
computeIfPresent(K key,
BiFunction<? super K,? super V,? extends V> remappingFunction)
If the value for the specified key is present, attempts to
compute a new mapping given the key and its current mapped value.
|
boolean |
containsKey(K key)
Returns
true if this map contains a mapping for the specified key. |
LinkedHashMap<K,V> |
distinct()
Returns a new version of this which contains no duplicates.
|
LinkedHashMap<K,V> |
distinctBy(Comparator<? super Tuple2<K,V>> comparator)
Returns a new version of this which contains no duplicates.
|
<U> LinkedHashMap<K,V> |
distinctBy(Function<? super Tuple2<K,V>,? extends U> keyExtractor)
Returns a new version of this which contains no duplicates.
|
LinkedHashMap<K,V> |
drop(int n)
Drops the first n elements of this or all elements, if this length < n.
|
LinkedHashMap<K,V> |
dropRight(int n)
Drops the last n elements of this or all elements, if this length < n.
|
LinkedHashMap<K,V> |
dropUntil(Predicate<? super Tuple2<K,V>> predicate)
Drops elements until the predicate holds for the current element.
|
LinkedHashMap<K,V> |
dropWhile(Predicate<? super Tuple2<K,V>> predicate)
Drops elements while the predicate holds for the current element.
|
static <K,V> LinkedHashMap<K,V> |
empty() |
boolean |
equals(Object o)
In Vavr there are four basic classes of collections:
Seq (sequential elements)
Set (distinct elements)
Map (indexed elements)
Multimap (indexed collections)
Two collection instances of these classes are equal if and only if both collections
belong to the same basic collection class (Seq, Set, Map or Multimap)
contain the same elements
have the same element order, if the collections are of type Seq
Two Map/Multimap elements, resp.
|
static <K,V> LinkedHashMap<K,V> |
fill(int n,
Supplier<? extends Tuple2<? extends K,? extends V>> s)
Returns a LinkedHashMap containing tuples returned by
n calls to a given Supplier s . |
LinkedHashMap<K,V> |
filter(BiPredicate<? super K,? super V> predicate)
Returns a new Map consisting of all elements which satisfy the given predicate.
|
LinkedHashMap<K,V> |
filter(Predicate<? super Tuple2<K,V>> predicate)
Returns a new traversable consisting of all elements which satisfy the given predicate.
|
LinkedHashMap<K,V> |
filterKeys(Predicate<? super K> predicate)
Returns a new Map consisting of all elements with keys which satisfy the given predicate.
|
LinkedHashMap<K,V> |
filterValues(Predicate<? super V> predicate)
Returns a new Map consisting of all elements with values which satisfy the given predicate.
|
<K2,V2> LinkedHashMap<K2,V2> |
flatMap(BiFunction<? super K,? super V,? extends Iterable<Tuple2<K2,V2>>> mapper)
FlatMaps this
Map to a new Map with different component type. |
Option<V> |
get(K key)
Returns the
Some of value to which the specified key
is mapped, or None if this map contains no mapping for the key. |
V |
getOrElse(K key,
V defaultValue)
Returns the value associated with a key, or a default value if the key is not contained in the map.
|
<C> Map<C,LinkedHashMap<K,V>> |
groupBy(Function<? super Tuple2<K,V>,? extends C> classifier)
Groups this elements by classifying the elements.
|
Iterator<LinkedHashMap<K,V>> |
grouped(int size)
Groups this
Traversable into fixed size blocks. |
int |
hashCode()
Returns the hash code of this collection.
|
Tuple2<K,V> |
head()
Returns the first element of a non-empty Traversable.
|
LinkedHashMap<K,V> |
init()
Dual of Traversable.tail(), returning all elements except the last.
|
Option<LinkedHashMap<K,V>> |
initOption()
Dual of Traversable.tailOption(), returning all elements except the last as
Option . |
boolean |
isAsync()
An
LinkedHashMap 's value is computed synchronously. |
boolean |
isEmpty()
Checks if this Traversable is empty.
|
boolean |
isLazy()
An
LinkedHashMap 's value is computed eagerly. |
boolean |
isSequential()
Checks if the elements of this Traversable appear in encounter order.
|
Iterator<Tuple2<K,V>> |
iterator()
An iterator by means of head() and tail().
|
Set<K> |
keySet()
Returns the keys contained in this map.
|
Tuple2<K,V> |
last()
Dual of Traversable.head(), returning the last element.
|
<K2,V2> LinkedHashMap<K2,V2> |
map(BiFunction<? super K,? super V,Tuple2<K2,V2>> mapper)
Maps the entries of this
Map to form a new Map . |
<K2> LinkedHashMap<K2,V> |
mapKeys(Function<? super K,? extends K2> keyMapper)
Maps the keys of this
Map while preserving the corresponding values. |
<K2> LinkedHashMap<K2,V> |
mapKeys(Function<? super K,? extends K2> keyMapper,
BiFunction<? super V,? super V,? extends V> valueMerge)
Maps the keys of this
Map while preserving the corresponding values and applying a value merge function on collisions. |
<W> LinkedHashMap<K,W> |
mapValues(Function<? super V,? extends W> mapper)
Maps the values of this
Map while preserving the corresponding keys. |
LinkedHashMap<K,V> |
merge(Map<? extends K,? extends V> that)
Creates a new map which by merging the entries of
this map and that map. |
<U extends V> |
merge(Map<? extends K,U> that,
BiFunction<? super V,? super U,? extends V> collisionResolution)
Creates a new map which by merging the entries of
this map and that map. |
static <K,V> LinkedHashMap<K,V> |
narrow(LinkedHashMap<? extends K,? extends V> linkedHashMap)
Narrows a widened
LinkedHashMap<? extends K, ? extends V> to LinkedHashMap<K, V>
by performing a type-safe cast. |
static <K,V> LinkedHashMap<K,V> |
of(K key,
V value)
Returns a singleton
LinkedHashMap , i.e. |
static <K,V> LinkedHashMap<K,V> |
of(K k1,
V v1,
K k2,
V v2)
Creates a LinkedHashMap of the given list of key-value pairs.
|
static <K,V> LinkedHashMap<K,V> |
of(K k1,
V v1,
K k2,
V v2,
K k3,
V v3)
Creates a LinkedHashMap of the given list of key-value pairs.
|
static <K,V> LinkedHashMap<K,V> |
of(K k1,
V v1,
K k2,
V v2,
K k3,
V v3,
K k4,
V v4)
Creates a LinkedHashMap of the given list of key-value pairs.
|
static <K,V> LinkedHashMap<K,V> |
of(K k1,
V v1,
K k2,
V v2,
K k3,
V v3,
K k4,
V v4,
K k5,
V v5)
Creates a LinkedHashMap of the given list of key-value pairs.
|
static <K,V> LinkedHashMap<K,V> |
of(K k1,
V v1,
K k2,
V v2,
K k3,
V v3,
K k4,
V v4,
K k5,
V v5,
K k6,
V v6)
Creates a LinkedHashMap of the given list of key-value pairs.
|
static <K,V> LinkedHashMap<K,V> |
of(K k1,
V v1,
K k2,
V v2,
K k3,
V v3,
K k4,
V v4,
K k5,
V v5,
K k6,
V v6,
K k7,
V v7)
Creates a LinkedHashMap of the given list of key-value pairs.
|
static <K,V> LinkedHashMap<K,V> |
of(K k1,
V v1,
K k2,
V v2,
K k3,
V v3,
K k4,
V v4,
K k5,
V v5,
K k6,
V v6,
K k7,
V v7,
K k8,
V v8)
Creates a LinkedHashMap of the given list of key-value pairs.
|
static <K,V> LinkedHashMap<K,V> |
of(K k1,
V v1,
K k2,
V v2,
K k3,
V v3,
K k4,
V v4,
K k5,
V v5,
K k6,
V v6,
K k7,
V v7,
K k8,
V v8,
K k9,
V v9)
Creates a LinkedHashMap of the given list of key-value pairs.
|
static <K,V> LinkedHashMap<K,V> |
of(K k1,
V v1,
K k2,
V v2,
K k3,
V v3,
K k4,
V v4,
K k5,
V v5,
K k6,
V v6,
K k7,
V v7,
K k8,
V v8,
K k9,
V v9,
K k10,
V v10)
Creates a LinkedHashMap of the given list of key-value pairs.
|
static <K,V> LinkedHashMap<K,V> |
of(Tuple2<? extends K,? extends V> entry)
Returns a singleton
LinkedHashMap , i.e. |
static <K,V> LinkedHashMap<K,V> |
ofAll(Map<? extends K,? extends V> map)
Returns a
LinkedHashMap , from a source java.util.Map. |
static <T,K,V> LinkedHashMap<K,V> |
ofAll(Stream<? extends T> stream,
Function<? super T,? extends K> keyMapper,
Function<? super T,? extends V> valueMapper)
Returns a
LinkedHashMap , from entries mapped from stream. |
static <T,K,V> LinkedHashMap<K,V> |
ofAll(Stream<? extends T> stream,
Function<? super T,Tuple2<? extends K,? extends V>> entryMapper)
Returns a
LinkedHashMap , from entries mapped from stream. |
static <K,V> LinkedHashMap<K,V> |
ofEntries(Iterable<? extends Tuple2<? extends K,? extends V>> entries)
Creates a LinkedHashMap of the given entries.
|
static <K,V> LinkedHashMap<K,V> |
ofEntries(Map.Entry<? extends K,? extends V>... entries)
Creates a LinkedHashMap of the given entries.
|
static <K,V> LinkedHashMap<K,V> |
ofEntries(Tuple2<? extends K,? extends V>... entries)
Creates a LinkedHashMap of the given entries.
|
LinkedHashMap<K,V> |
orElse(Iterable<? extends Tuple2<K,V>> other)
Returns this
Traversable if it is nonempty, otherwise return the alternative. |
LinkedHashMap<K,V> |
orElse(Supplier<? extends Iterable<? extends Tuple2<K,V>>> supplier)
Returns this
Traversable if it is nonempty, otherwise return the result of evaluating supplier. |
Tuple2<LinkedHashMap<K,V>,LinkedHashMap<K,V>> |
partition(Predicate<? super Tuple2<K,V>> predicate)
Creates a partition of this
Traversable by splitting this elements in two in distinct traversables
according to a predicate. |
LinkedHashMap<K,V> |
peek(Consumer<? super Tuple2<K,V>> action)
Performs the given
action on the first element if this is an eager implementation. |
<U extends V> |
put(K key,
U value,
BiFunction<? super V,? super U,? extends V> merge)
Associates the specified value with the specified key in this map.
|
LinkedHashMap<K,V> |
put(K key,
V value)
Associates the specified value with the specified key in this map.
|
LinkedHashMap<K,V> |
put(Tuple2<? extends K,? extends V> entry)
Convenience method for
put(entry._1, entry._2) . |
<U extends V> |
put(Tuple2<? extends K,U> entry,
BiFunction<? super V,? super U,? extends V> merge)
Convenience method for
put(entry._1, entry._2, merge) . |
LinkedHashMap<K,V> |
reject(BiPredicate<? super K,? super V> predicate)
Returns a new Map consisting of all elements which do not satisfy the given predicate.
|
LinkedHashMap<K,V> |
reject(Predicate<? super Tuple2<K,V>> predicate)
Returns a new traversable consisting of all elements which do not satisfy the given predicate.
|
LinkedHashMap<K,V> |
rejectKeys(Predicate<? super K> predicate)
Returns a new Map consisting of all elements with keys which do not satisfy the given predicate.
|
LinkedHashMap<K,V> |
rejectValues(Predicate<? super V> predicate)
Returns a new Map consisting of all elements with values which do not satisfy the given predicate.
|
LinkedHashMap<K,V> |
remove(K key)
Removes the mapping for a key from this map if it is present.
|
LinkedHashMap<K,V> |
removeAll(BiPredicate<? super K,? super V> predicate)
Deprecated.
|
LinkedHashMap<K,V> |
removeAll(Iterable<? extends K> keys)
Removes the mapping for a key from this map if it is present.
|
LinkedHashMap<K,V> |
removeKeys(Predicate<? super K> predicate)
Deprecated.
|
LinkedHashMap<K,V> |
removeValues(Predicate<? super V> predicate)
Deprecated.
|
LinkedHashMap<K,V> |
replace(K key,
V oldValue,
V newValue)
Replaces the entry for the specified key only if currently mapped to the specified value.
|
LinkedHashMap<K,V> |
replace(Tuple2<K,V> currentElement,
Tuple2<K,V> newElement)
Replaces the first occurrence (if exists) of the given currentElement with newElement.
|
LinkedHashMap<K,V> |
replaceAll(BiFunction<? super K,? super V,? extends V> function)
Replaces each entry's value with the result of invoking the given function on that entry until all entries have been processed or the function throws an exception.
|
LinkedHashMap<K,V> |
replaceAll(Tuple2<K,V> currentElement,
Tuple2<K,V> newElement)
Replaces all occurrences of the given currentElement with newElement.
|
LinkedHashMap<K,V> |
replaceValue(K key,
V value)
Replaces the entry for the specified key only if it is currently mapped to some value.
|
LinkedHashMap<K,V> |
retainAll(Iterable<? extends Tuple2<K,V>> elements)
Keeps all occurrences of the given elements from this.
|
LinkedHashMap<K,V> |
scan(Tuple2<K,V> zero,
BiFunction<? super Tuple2<K,V>,? super Tuple2<K,V>,? extends Tuple2<K,V>> operation)
Computes a prefix scan of the elements of the collection.
|
int |
size()
Computes the number of elements of this Traversable.
|
Iterator<LinkedHashMap<K,V>> |
slideBy(Function<? super Tuple2<K,V>,?> classifier)
Slides a non-overlapping window of a variable size over this
Traversable . |
Iterator<LinkedHashMap<K,V>> |
sliding(int size)
Slides a window of a specific
size and step size 1 over this Traversable by calling
Traversable.sliding(int, int) . |
Iterator<LinkedHashMap<K,V>> |
sliding(int size,
int step)
Slides a window of a specific
size and step size over this Traversable . |
Tuple2<LinkedHashMap<K,V>,LinkedHashMap<K,V>> |
span(Predicate<? super Tuple2<K,V>> predicate)
Returns a tuple where the first element is the longest prefix of elements that satisfy the given
predicate and the second element is the remainder. |
String |
stringPrefix()
Returns the name of this Value type, which is used by toString().
|
static <K,V> LinkedHashMap<K,V> |
tabulate(int n,
Function<? super Integer,? extends Tuple2<? extends K,? extends V>> f)
Returns a LinkedHashMap containing
n values of a given Function f
over a range of integer values from 0 to n - 1 . |
LinkedHashMap<K,V> |
tail()
Drops the first element of a non-empty Traversable.
|
Option<LinkedHashMap<K,V>> |
tailOption()
Drops the first element of a non-empty Traversable and returns an
Option . |
LinkedHashMap<K,V> |
take(int n)
Takes the first n elements of this or all elements, if this length < n.
|
LinkedHashMap<K,V> |
takeRight(int n)
Takes the last n elements of this or all elements, if this length < n.
|
LinkedHashMap<K,V> |
takeUntil(Predicate<? super Tuple2<K,V>> predicate)
Takes elements until the predicate holds for the current element.
|
LinkedHashMap<K,V> |
takeWhile(Predicate<? super Tuple2<K,V>> predicate)
Takes elements while the predicate holds for the current element.
|
LinkedHashMap<K,V> |
toJavaMap()
Converts this Vavr
Map to a java.util.Map while preserving characteristics
like insertion order (LinkedHashMap ) and sort order (SortedMap ). |
String |
toString()
Clarifies that values have a proper toString() method implemented.
|
Seq<V> |
values()
Returns a new
Seq that contains the values of this Map . |
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
apply, asPartialFunction, collect, contains, containsValue, entry, flatMap, foldRight, forEach, hasDefiniteSize, isDefinedAt, isDistinct, isTraversableAgain, iterator, keysIterator, length, lift, map, narrow, scanLeft, scanRight, transform, unzip, unzip, unzip, unzip3, unzip3, valuesIterator, withDefault, withDefaultValue, zip, zipAll, zipWith, zipWithIndex, zipWithIndex
arrangeBy, average, containsAll, count, existsUnique, find, findLast, foldLeft, forEachWithIndex, get, headOption, isOrdered, isSingleValued, lastOption, max, maxBy, maxBy, min, minBy, minBy, mkCharSeq, mkCharSeq, mkCharSeq, mkString, mkString, mkString, narrow, nonEmpty, product, reduceLeft, reduceLeftOption, reduceRight, reduceRightOption, single, singleOption, spliterator, sum
fold, reduce, reduceOption
collect, collect, corresponds, eq, exists, forAll, forEach, getOrElse, getOrElse, getOrElseThrow, getOrElseTry, getOrNull, narrow, out, out, stderr, stdout, toArray, toCharSeq, toCompletableFuture, toEither, toEither, toInvalid, toInvalid, toJavaArray, toJavaArray, toJavaArray, toJavaCollection, toJavaList, toJavaList, toJavaMap, toJavaMap, toJavaMap, toJavaOptional, toJavaParallelStream, toJavaSet, toJavaSet, toJavaStream, toLeft, toLeft, toLinkedMap, toLinkedMap, toLinkedSet, toList, toMap, toMap, toOption, toPriorityQueue, toPriorityQueue, toQueue, toRight, toRight, toSet, toSortedMap, toSortedMap, toSortedMap, toSortedMap, toSortedSet, toSortedSet, toStream, toTree, toTree, toTry, toTry, toValid, toValid, toValidation, toValidation, toVector
getIfDefined, unlift
public static <K,V> Collector<Tuple2<K,V>,ArrayList<Tuple2<K,V>>,LinkedHashMap<K,V>> collector()
Collector
which may be used in conjunction with
Stream.collect(java.util.stream.Collector)
to obtain a LinkedHashMap
.K
- The key typeV
- The value typeLinkedHashMap
Collector.public static <K,V,T extends V> Collector<T,ArrayList<T>,LinkedHashMap<K,V>> collector(Function<? super T,? extends K> keyMapper)
Collector
which may be used in conjunction with
Stream.collect(java.util.stream.Collector)
to obtain a LinkedHashMap
.K
- The key typeV
- The value typeT
- Initial Stream
elements typekeyMapper
- The key mapperLinkedHashMap
Collector.public static <K,V,T> Collector<T,ArrayList<T>,LinkedHashMap<K,V>> collector(Function<? super T,? extends K> keyMapper, Function<? super T,? extends V> valueMapper)
Collector
which may be used in conjunction with
Stream.collect(java.util.stream.Collector)
to obtain a LinkedHashMap
.K
- The key typeV
- The value typeT
- Initial Stream
elements typekeyMapper
- The key mappervalueMapper
- The value mapperLinkedHashMap
Collector.public static <K,V> LinkedHashMap<K,V> empty()
public static <K,V> LinkedHashMap<K,V> narrow(LinkedHashMap<? extends K,? extends V> linkedHashMap)
LinkedHashMap<? extends K, ? extends V>
to LinkedHashMap<K, V>
by performing a type-safe cast. This is eligible because immutable/read-only
collections are covariant.K
- Key typeV
- Value typelinkedHashMap
- A LinkedHashMap
.linkedHashMap
instance as narrowed type LinkedHashMap<K, V>
.public static <K,V> LinkedHashMap<K,V> of(Tuple2<? extends K,? extends V> entry)
LinkedHashMap
, i.e. a LinkedHashMap
of one element.K
- The key typeV
- The value typeentry
- A map entry.public static <K,V> LinkedHashMap<K,V> ofAll(Map<? extends K,? extends V> map)
LinkedHashMap
, from a source java.util.Map.K
- The key typeV
- The value typemap
- A mappublic static <T,K,V> LinkedHashMap<K,V> ofAll(Stream<? extends T> stream, Function<? super T,Tuple2<? extends K,? extends V>> entryMapper)
LinkedHashMap
, from entries mapped from stream.T
- The stream element typeK
- The key typeV
- The value typestream
- the source streamentryMapper
- the entry mapperpublic static <T,K,V> LinkedHashMap<K,V> ofAll(Stream<? extends T> stream, Function<? super T,? extends K> keyMapper, Function<? super T,? extends V> valueMapper)
LinkedHashMap
, from entries mapped from stream.T
- The stream element typeK
- The key typeV
- The value typestream
- the source streamkeyMapper
- the key mappervalueMapper
- the value mapperpublic static <K,V> LinkedHashMap<K,V> of(K key, V value)
LinkedHashMap
, i.e. a LinkedHashMap
of one element.K
- The key typeV
- The value typekey
- A singleton map key.value
- A singleton map value.public static <K,V> LinkedHashMap<K,V> of(K k1, V v1, K k2, V v2)
K
- The key typeV
- The value typek1
- a key for the mapv1
- the value for k1k2
- a key for the mapv2
- the value for k2public static <K,V> LinkedHashMap<K,V> of(K k1, V v1, K k2, V v2, K k3, V v3)
K
- The key typeV
- The value typek1
- a key for the mapv1
- the value for k1k2
- a key for the mapv2
- the value for k2k3
- a key for the mapv3
- the value for k3public static <K,V> LinkedHashMap<K,V> of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4)
K
- The key typeV
- The value typek1
- a key for the mapv1
- the value for k1k2
- a key for the mapv2
- the value for k2k3
- a key for the mapv3
- the value for k3k4
- a key for the mapv4
- the value for k4public static <K,V> LinkedHashMap<K,V> of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4, K k5, V v5)
K
- The key typeV
- The value typek1
- a key for the mapv1
- the value for k1k2
- a key for the mapv2
- the value for k2k3
- a key for the mapv3
- the value for k3k4
- a key for the mapv4
- the value for k4k5
- a key for the mapv5
- the value for k5public static <K,V> LinkedHashMap<K,V> of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4, K k5, V v5, K k6, V v6)
K
- The key typeV
- The value typek1
- a key for the mapv1
- the value for k1k2
- a key for the mapv2
- the value for k2k3
- a key for the mapv3
- the value for k3k4
- a key for the mapv4
- the value for k4k5
- a key for the mapv5
- the value for k5k6
- a key for the mapv6
- the value for k6public static <K,V> LinkedHashMap<K,V> of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4, K k5, V v5, K k6, V v6, K k7, V v7)
K
- The key typeV
- The value typek1
- a key for the mapv1
- the value for k1k2
- a key for the mapv2
- the value for k2k3
- a key for the mapv3
- the value for k3k4
- a key for the mapv4
- the value for k4k5
- a key for the mapv5
- the value for k5k6
- a key for the mapv6
- the value for k6k7
- a key for the mapv7
- the value for k7public static <K,V> LinkedHashMap<K,V> of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4, K k5, V v5, K k6, V v6, K k7, V v7, K k8, V v8)
K
- The key typeV
- The value typek1
- a key for the mapv1
- the value for k1k2
- a key for the mapv2
- the value for k2k3
- a key for the mapv3
- the value for k3k4
- a key for the mapv4
- the value for k4k5
- a key for the mapv5
- the value for k5k6
- a key for the mapv6
- the value for k6k7
- a key for the mapv7
- the value for k7k8
- a key for the mapv8
- the value for k8public static <K,V> LinkedHashMap<K,V> of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4, K k5, V v5, K k6, V v6, K k7, V v7, K k8, V v8, K k9, V v9)
K
- The key typeV
- The value typek1
- a key for the mapv1
- the value for k1k2
- a key for the mapv2
- the value for k2k3
- a key for the mapv3
- the value for k3k4
- a key for the mapv4
- the value for k4k5
- a key for the mapv5
- the value for k5k6
- a key for the mapv6
- the value for k6k7
- a key for the mapv7
- the value for k7k8
- a key for the mapv8
- the value for k8k9
- a key for the mapv9
- the value for k9public static <K,V> LinkedHashMap<K,V> of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4, K k5, V v5, K k6, V v6, K k7, V v7, K k8, V v8, K k9, V v9, K k10, V v10)
K
- The key typeV
- The value typek1
- a key for the mapv1
- the value for k1k2
- a key for the mapv2
- the value for k2k3
- a key for the mapv3
- the value for k3k4
- a key for the mapv4
- the value for k4k5
- a key for the mapv5
- the value for k5k6
- a key for the mapv6
- the value for k6k7
- a key for the mapv7
- the value for k7k8
- a key for the mapv8
- the value for k8k9
- a key for the mapv9
- the value for k9k10
- a key for the mapv10
- the value for k10public static <K,V> LinkedHashMap<K,V> tabulate(int n, Function<? super Integer,? extends Tuple2<? extends K,? extends V>> f)
n
values of a given Function f
over a range of integer values from 0 to n - 1
.K
- The key typeV
- The value typen
- The number of elements in the LinkedHashMapf
- The Function computing element valuesf(0),f(1), ..., f(n - 1)
NullPointerException
- if f
is nullpublic static <K,V> LinkedHashMap<K,V> fill(int n, Supplier<? extends Tuple2<? extends K,? extends V>> s)
n
calls to a given Supplier s
.K
- The key typeV
- The value typen
- The number of elements in the LinkedHashMaps
- The Supplier computing element valuesn
, where each element contains the result supplied by s
.NullPointerException
- if s
is nullpublic static <K,V> LinkedHashMap<K,V> ofEntries(Map.Entry<? extends K,? extends V>... entries)
K
- The key typeV
- The value typeentries
- Map entriespublic static <K,V> LinkedHashMap<K,V> ofEntries(Tuple2<? extends K,? extends V>... entries)
K
- The key typeV
- The value typeentries
- Map entriespublic static <K,V> LinkedHashMap<K,V> ofEntries(Iterable<? extends Tuple2<? extends K,? extends V>> entries)
K
- The key typeV
- The value typeentries
- Map entriespublic <K2,V2> LinkedHashMap<K2,V2> bimap(Function<? super K,? extends K2> keyMapper, Function<? super V,? extends V2> valueMapper)
Map
Map
to a new Map
with different component type by applying a function to its elements.bimap
in interface Map<K,V>
K2
- key's component type of the map resultV2
- value's component type of the map resultkeyMapper
- a Function
that maps the keys of type K
to keys of type K2
valueMapper
- a Function
that the values of type V
to values of type V2
Map
public Tuple2<V,LinkedHashMap<K,V>> computeIfAbsent(K key, Function<? super K,? extends V> mappingFunction)
Map
computeIfAbsent
in interface Map<K,V>
key
- key whose presence in this map is to be testedmappingFunction
- mapping functionTuple2
of current or modified map and existing or computed value associated with the specified keypublic Tuple2<Option<V>,LinkedHashMap<K,V>> computeIfPresent(K key, BiFunction<? super K,? super V,? extends V> remappingFunction)
Map
computeIfPresent
in interface Map<K,V>
key
- key whose presence in this map is to be testedremappingFunction
- remapping functionTuple2
of current or modified map and the Some
of the value associated
with the specified key, or None
if nonepublic boolean containsKey(K key)
Map
true
if this map contains a mapping for the specified key.containsKey
in interface Map<K,V>
key
- key whose presence in this map is to be testedtrue
if this map contains a mapping for the specified keypublic LinkedHashMap<K,V> distinct()
Traversable
equals
.public LinkedHashMap<K,V> distinctBy(Comparator<? super Tuple2<K,V>> comparator)
Traversable
comparator
.distinctBy
in interface Map<K,V>
distinctBy
in interface Traversable<Tuple2<K,V>>
comparator
- A comparatorTraversable
containing this elements without duplicatespublic <U> LinkedHashMap<K,V> distinctBy(Function<? super Tuple2<K,V>,? extends U> keyExtractor)
Traversable
equals
.
The elements of the result are determined in the order of their occurrence - first match wins.
distinctBy
in interface Map<K,V>
distinctBy
in interface Traversable<Tuple2<K,V>>
U
- key typekeyExtractor
- A key extractorTraversable
containing this elements without duplicatespublic LinkedHashMap<K,V> drop(int n)
Traversable
public LinkedHashMap<K,V> dropRight(int n)
Traversable
dropRight
in interface Map<K,V>
dropRight
in interface Traversable<Tuple2<K,V>>
n
- The number of elements to drop.public LinkedHashMap<K,V> dropUntil(Predicate<? super Tuple2<K,V>> predicate)
Traversable
dropUntil
in interface Map<K,V>
dropUntil
in interface Traversable<Tuple2<K,V>>
predicate
- A condition tested subsequently for this elements.public LinkedHashMap<K,V> dropWhile(Predicate<? super Tuple2<K,V>> predicate)
Traversable
Note: This is essentially the same as dropUntil(predicate.negate())
.
It is intended to be used with method references, which cannot be negated directly.
dropWhile
in interface Map<K,V>
dropWhile
in interface Traversable<Tuple2<K,V>>
predicate
- A condition tested subsequently for this elements.public LinkedHashMap<K,V> filter(BiPredicate<? super K,? super V> predicate)
Map
public LinkedHashMap<K,V> reject(BiPredicate<? super K,? super V> predicate)
Map
public LinkedHashMap<K,V> filter(Predicate<? super Tuple2<K,V>> predicate)
Traversable
public LinkedHashMap<K,V> reject(Predicate<? super Tuple2<K,V>> predicate)
Traversable
The default implementation is equivalent to
filter(predicate.negate()
public LinkedHashMap<K,V> filterKeys(Predicate<? super K> predicate)
Map
filterKeys
in interface Map<K,V>
predicate
- the predicate used to test keys of elementspublic LinkedHashMap<K,V> rejectKeys(Predicate<? super K> predicate)
Map
rejectKeys
in interface Map<K,V>
predicate
- the predicate used to test keys of elementspublic LinkedHashMap<K,V> filterValues(Predicate<? super V> predicate)
Map
filterValues
in interface Map<K,V>
predicate
- the predicate used to test values of elementspublic LinkedHashMap<K,V> rejectValues(Predicate<? super V> predicate)
Map
rejectValues
in interface Map<K,V>
predicate
- the predicate used to test values of elementspublic <K2,V2> LinkedHashMap<K2,V2> flatMap(BiFunction<? super K,? super V,? extends Iterable<Tuple2<K2,V2>>> mapper)
Map
Map
to a new Map
with different component type.public Option<V> get(K key)
Map
Some
of value to which the specified key
is mapped, or None
if this map contains no mapping for the key.public V getOrElse(K key, V defaultValue)
Map
public <C> Map<C,LinkedHashMap<K,V>> groupBy(Function<? super Tuple2<K,V>,? extends C> classifier)
Traversable
groupBy
in interface Map<K,V>
groupBy
in interface Traversable<Tuple2<K,V>>
C
- classified class typeclassifier
- A function which classifies elements into classesTraversable.arrangeBy(Function)
public Iterator<LinkedHashMap<K,V>> grouped(int size)
Traversable
Traversable
into fixed size blocks.
Let length be the length of this Iterable. Then grouped is defined as follows:
this.isEmpty()
, the resulting Iterator
is empty.size <= length
, the resulting Iterator
will contain length / size
blocks of size
size
and maybe a non-empty block of size length % size
, if there are remaining elements.size > length
, the resulting Iterator
will contain one block of size length
.
[].grouped(1) = []
[].grouped(0) throws
[].grouped(-1) throws
[1,2,3,4].grouped(2) = [[1,2],[3,4]]
[1,2,3,4,5].grouped(2) = [[1,2],[3,4],[5]]
[1,2,3,4].grouped(5) = [[1,2,3,4]]
Please note that grouped(int)
is a special case of Traversable.sliding(int, int), i.e.
grouped(size)
is the same as sliding(size, size)
.public Tuple2<K,V> head()
Traversable
head
in interface Traversable<Tuple2<K,V>>
public LinkedHashMap<K,V> init()
Traversable
public Option<LinkedHashMap<K,V>> initOption()
Traversable
Option
.initOption
in interface Map<K,V>
initOption
in interface Traversable<Tuple2<K,V>>
Some(traversable)
or None
if this is empty.public boolean isAsync()
LinkedHashMap
's value is computed synchronously.public boolean isEmpty()
Traversable
public boolean isLazy()
LinkedHashMap
's value is computed eagerly.public boolean isSequential()
Traversable
isSequential
in interface Traversable<Tuple2<K,V>>
public Iterator<Tuple2<K,V>> iterator()
Traversable
public Set<K> keySet()
Map
public Tuple2<K,V> last()
Traversable
last
in interface Traversable<Tuple2<K,V>>
public <K2,V2> LinkedHashMap<K2,V2> map(BiFunction<? super K,? super V,Tuple2<K2,V2>> mapper)
Map
Map
to form a new Map
.public <K2> LinkedHashMap<K2,V> mapKeys(Function<? super K,? extends K2> keyMapper)
Map
Map
while preserving the corresponding values.
The size of the result map may be smaller if keyMapper
maps two or more distinct keys to the same new key.
In this case the value at the latest
of the original keys is retained.
Order of keys is predictable in TreeMap
(by comparator) and LinkedHashMap
(insertion-order) and not predictable in HashMap
.
public <K2> LinkedHashMap<K2,V> mapKeys(Function<? super K,? extends K2> keyMapper, BiFunction<? super V,? super V,? extends V> valueMerge)
Map
Map
while preserving the corresponding values and applying a value merge function on collisions.
The size of the result map may be smaller if keyMapper
maps two or more distinct keys to the same new key.
In this case the associated values will be combined using valueMerge
.
public <W> LinkedHashMap<K,W> mapValues(Function<? super V,? extends W> mapper)
Map
Map
while preserving the corresponding keys.public LinkedHashMap<K,V> merge(Map<? extends K,? extends V> that)
Map
this
map and that
map.
If collisions occur, the value of this
map is taken.
public <U extends V> LinkedHashMap<K,V> merge(Map<? extends K,U> that, BiFunction<? super V,? super U,? extends V> collisionResolution)
Map
this
map and that
map.
Uses the specified collision resolution function if two keys are the same.
The collision resolution function will always take the first argument from this
map
and the second from that
map.
public LinkedHashMap<K,V> orElse(Iterable<? extends Tuple2<K,V>> other)
Traversable
Traversable
if it is nonempty, otherwise return the alternative.public LinkedHashMap<K,V> orElse(Supplier<? extends Iterable<? extends Tuple2<K,V>>> supplier)
Traversable
Traversable
if it is nonempty, otherwise return the result of evaluating supplier.public Tuple2<LinkedHashMap<K,V>,LinkedHashMap<K,V>> partition(Predicate<? super Tuple2<K,V>> predicate)
Traversable
Traversable
by splitting this elements in two in distinct traversables
according to a predicate.partition
in interface Map<K,V>
partition
in interface Traversable<Tuple2<K,V>>
predicate
- A predicate which classifies an element if it is in the first or the second traversable.Traversable
contains all elements that satisfy the given predicate
, the second Traversable
contains all elements that don't. The original order of elements is preserved.public LinkedHashMap<K,V> peek(Consumer<? super Tuple2<K,V>> action)
Value
action
on the first element if this is an eager implementation.
Performs the given action
on all elements (the first immediately, successive deferred),
if this is a lazy implementation.public <U extends V> LinkedHashMap<K,V> put(K key, U value, BiFunction<? super V,? super U,? extends V> merge)
Map
put
in interface Map<K,V>
U
- the value typekey
- key with which the specified value is to be associatedvalue
- value to be associated with the specified keymerge
- function taking the old and new values and merging them.public LinkedHashMap<K,V> put(K key, V value)
Note that this method has a worst-case linear complexity.
public LinkedHashMap<K,V> put(Tuple2<? extends K,? extends V> entry)
Map
put(entry._1, entry._2)
.public <U extends V> LinkedHashMap<K,V> put(Tuple2<? extends K,U> entry, BiFunction<? super V,? super U,? extends V> merge)
Map
put(entry._1, entry._2, merge)
.public LinkedHashMap<K,V> remove(K key)
Map
@Deprecated public LinkedHashMap<K,V> removeAll(BiPredicate<? super K,? super V> predicate)
Map
public LinkedHashMap<K,V> removeAll(Iterable<? extends K> keys)
Map
@Deprecated public LinkedHashMap<K,V> removeKeys(Predicate<? super K> predicate)
Map
removeKeys
in interface Map<K,V>
predicate
- the predicate used to test keys of elements@Deprecated public LinkedHashMap<K,V> removeValues(Predicate<? super V> predicate)
Map
removeValues
in interface Map<K,V>
predicate
- the predicate used to test values of elementspublic LinkedHashMap<K,V> replace(Tuple2<K,V> currentElement, Tuple2<K,V> newElement)
Traversable
replace
in interface Map<K,V>
replace
in interface Traversable<Tuple2<K,V>>
currentElement
- An element to be substituted.newElement
- A replacement for currentElement.public LinkedHashMap<K,V> replaceAll(Tuple2<K,V> currentElement, Tuple2<K,V> newElement)
Traversable
replaceAll
in interface Map<K,V>
replaceAll
in interface Traversable<Tuple2<K,V>>
currentElement
- An element to be substituted.newElement
- A replacement for currentElement.public LinkedHashMap<K,V> replaceValue(K key, V value)
Map
replaceValue
in interface Map<K,V>
key
- the key of the element to be substituted.value
- the new value to be associated with the keypublic LinkedHashMap<K,V> replace(K key, V oldValue, V newValue)
Map
replace
in interface Map<K,V>
key
- the key of the element to be substituted.oldValue
- the expected current value that the key is currently mapped tonewValue
- the new value to be associated with the keypublic LinkedHashMap<K,V> replaceAll(BiFunction<? super K,? super V,? extends V> function)
Map
replaceAll
in interface Map<K,V>
function
- function transforming key and current value to a new valuepublic LinkedHashMap<K,V> retainAll(Iterable<? extends Tuple2<K,V>> elements)
Traversable
public LinkedHashMap<K,V> scan(Tuple2<K,V> zero, BiFunction<? super Tuple2<K,V>,? super Tuple2<K,V>,? extends Tuple2<K,V>> operation)
Traversable
scan
in interface Map<K,V>
scan
in interface Traversable<Tuple2<K,V>>
zero
- neutral element for the operator opoperation
- the associative operator for the scanpublic int size()
Traversable
Same as Traversable.length()
.
public Iterator<LinkedHashMap<K,V>> slideBy(Function<? super Tuple2<K,V>,?> classifier)
Traversable
Traversable
.
Each window contains elements with the same class, as determined by classifier
. Two consecutive
values in this Traversable
will be in the same window only if classifier
returns equal
values for them. Otherwise, the values will constitute the last element of the previous window and the
first element of the next window.
Examples:
[].slideBy(Function.identity()) = []
[1,2,3,4,4,5].slideBy(Function.identity()) = [[1],[2],[3],[4,4],[5]]
[1,2,3,10,12,5,7,20,29].slideBy(x -> x/10) = [[1,2,3],[10,12],[5,7],[20,29]]
public Iterator<LinkedHashMap<K,V>> sliding(int size)
Traversable
size
and step size 1 over this Traversable
by calling
Traversable.sliding(int, int)
.public Iterator<LinkedHashMap<K,V>> sliding(int size, int step)
Traversable
size
and step
size over this Traversable
.
Examples:
[].sliding(1,1) = []
[1,2,3,4,5].sliding(2,3) = [[1,2],[4,5]]
[1,2,3,4,5].sliding(2,4) = [[1,2],[5]]
[1,2,3,4,5].sliding(2,5) = [[1,2]]
[1,2,3,4].sliding(5,3) = [[1,2,3,4],[4]]
public Tuple2<LinkedHashMap<K,V>,LinkedHashMap<K,V>> span(Predicate<? super Tuple2<K,V>> predicate)
Traversable
predicate
and the second element is the remainder.public LinkedHashMap<K,V> tail()
Traversable
public Option<LinkedHashMap<K,V>> tailOption()
Traversable
Option
.tailOption
in interface Map<K,V>
tailOption
in interface Traversable<Tuple2<K,V>>
Some(traversable)
or None
if this is empty.public LinkedHashMap<K,V> take(int n)
Traversable
The result is equivalent to sublist(0, max(0, min(length(), n)))
but does not throw if n < 0
or
n > length()
.
In the case of n < 0
the empty instance is returned, in the case of n > length()
this is returned.
public LinkedHashMap<K,V> takeRight(int n)
Traversable
The result is equivalent to sublist(max(0, min(length(), length() - n)), n)
, i.e. takeRight will not
throw if n < 0
or n > length()
.
In the case of n < 0
the empty instance is returned, in the case of n > length()
this is returned.
public LinkedHashMap<K,V> takeUntil(Predicate<? super Tuple2<K,V>> predicate)
Traversable
Note: This is essentially the same as takeWhile(predicate.negate())
. It is intended to be used with
method references, which cannot be negated directly.
public LinkedHashMap<K,V> takeWhile(Predicate<? super Tuple2<K,V>> predicate)
Traversable
takeWhile
in interface Map<K,V>
takeWhile
in interface Traversable<Tuple2<K,V>>
predicate
- A condition tested subsequently for the contained elements.public LinkedHashMap<K,V> toJavaMap()
Map
Map
to a java.util.Map
while preserving characteristics
like insertion order (LinkedHashMap
) and sort order (SortedMap
).public Seq<V> values()
Map
Seq
that contains the values of this Map
.
// = Seq("a", "b", "c")
HashMap.of(1, "a", 2, "b", 3, "c").values()
public boolean equals(Object o)
Traversable
Notes:
public int hashCode()
Traversable
int hash = 1;
for (T t : this) { hash = hash * 31 + Objects.hashCode(t); }
Collections with arbitrary iteration order are hashed in a way such that the hash of a fixed number of elements is independent of their iteration order.
int hash = 1;
for (T t : this) { hash += Objects.hashCode(t); }
Please note that the particular hashing algorithms may change in a future version of Vavr.
public final class Hashed<K> {
private final K key;
private final Lazy<Integer> hashCode;
public Hashed(K key) {
this.key = key;
this.hashCode = Lazy.of(() -> Objects.hashCode(key));
}
public K key() {
return key;
}
@Override
public boolean equals(Object o) {
if (o == key) {
return true;
} else if (key != null && o instanceof Hashed) {
final Hashed that = (Hashed) o;
return key.equals(that.key);
} else {
return false;
}
}
@Override
public int hashCode() {
return hashCode.get();
}
@Override
public String toString() {
return "Hashed(" + (key == null ? "null" : key.toString()) + ")";
}
}
public String stringPrefix()
Value
stringPrefix
in interface Value<Tuple2<K,V>>
public String toString()
Value
See Object.toString().
Copyright © 2019. All Rights Reserved.