Package it.unimi.dsi.fastutil.objects
Class Object2CharMaps
java.lang.Object
it.unimi.dsi.fastutil.objects.Object2CharMaps
A class providing static methods and objects that do useful things with type-specific maps.
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Nested Class Summary
Modifier and TypeClassDescriptionstatic class
An immutable class representing an empty type-specific map.static class
An immutable class representing a type-specific singleton map.static class
A synchronized wrapper class for maps.static class
An unmodifiable wrapper class for maps. -
Field Summary
Modifier and TypeFieldDescriptionstatic final Object2CharMaps.EmptyMap
An empty type-specific map (immutable). -
Method Summary
Modifier and TypeMethodDescriptionstatic <K> Object2CharMap
<K> emptyMap()
Returns an empty map (immutable).static <K> void
fastForEach
(Object2CharMap<K> map, Consumer<? super Object2CharMap.Entry<K>> consumer) static <K> ObjectIterable
<Object2CharMap.Entry<K>> fastIterable
(Object2CharMap<K> map) static <K> ObjectIterator
<Object2CharMap.Entry<K>> fastIterator
(Object2CharMap<K> map) static <K> Object2CharMap
<K> singleton
(K key, char value) Returns a type-specific immutable map containing only the specified pair.static <K> Object2CharMap
<K> Returns a type-specific immutable map containing only the specified pair.static <K> Object2CharMap
<K> synchronize
(Object2CharMap<K> m) Returns a synchronized type-specific map backed by the given type-specific map.static <K> Object2CharMap
<K> synchronize
(Object2CharMap<K> m, Object sync) Returns a synchronized type-specific map backed by the given type-specific map, using an assigned object to synchronize.static <K> Object2CharMap
<K> unmodifiable
(Object2CharMap<? extends K> m) Returns an unmodifiable type-specific map backed by the given type-specific map.
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Field Details
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EMPTY_MAP
An empty type-specific map (immutable). It is serializable and cloneable.
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Method Details
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fastIterator
- Parameters:
map
- a map from which we will try to extract a (fast) iterator on the entry set.- Returns:
- an iterator on the entry set of the given map that will be fast, if possible.
- Since:
- 8.0.0
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fastForEach
public static <K> void fastForEach(Object2CharMap<K> map, Consumer<? super Object2CharMap.Entry<K>> consumer) - Parameters:
map
- a map on which we will try to iterate quickly.consumer
- the consumer that will be passed toObject2CharMap.FastEntrySet.fastForEach(Consumer)
, if possible, or toIterable.forEach(Consumer)
.- Since:
- 8.1.0
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fastIterable
Returns an iterable yielding an iterator that will be fast, if possible, on the entry set of the providedmap
.- Parameters:
map
- a map from which we will try to extract an iterable yielding a (fast) iterator on the entry set.- Returns:
- an iterable yielding an iterator on the entry set of the given map that will be fast, if possible.
- Since:
- 8.0.0
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emptyMap
Returns an empty map (immutable). It is serializable and cloneable.This method provides a typesafe access to
EMPTY_MAP
.- Returns:
- an empty map (immutable).
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singleton
Returns a type-specific immutable map containing only the specified pair. The returned map is serializable and cloneable.Note that albeit the returned map is immutable, its default return value may be changed.
- Parameters:
key
- the only key of the returned map.value
- the only value of the returned map.- Returns:
- a type-specific immutable map containing just the pair
<key,value>
.
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singleton
Returns a type-specific immutable map containing only the specified pair. The returned map is serializable and cloneable.Note that albeit the returned map is immutable, its default return value may be changed.
- Parameters:
key
- the only key of the returned map.value
- the only value of the returned map.- Returns:
- a type-specific immutable map containing just the pair
<key,value>
.
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synchronize
Returns a synchronized type-specific map backed by the given type-specific map.- Parameters:
m
- the map to be wrapped in a synchronized map.- Returns:
- a synchronized view of the specified map.
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synchronize
Returns a synchronized type-specific map backed by the given type-specific map, using an assigned object to synchronize.- Parameters:
m
- the map to be wrapped in a synchronized map.sync
- an object that will be used to synchronize the access to the map.- Returns:
- a synchronized view of the specified map.
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unmodifiable
Returns an unmodifiable type-specific map backed by the given type-specific map.- Parameters:
m
- the map to be wrapped in an unmodifiable map.- Returns:
- an unmodifiable view of the specified map.
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