it.unimi.dsi.fastutil.doubles

Class Double2LongSortedMaps

java.lang.Object

it.unimi.dsi.fastutil.doubles.Double2LongSortedMaps

public final class Double2LongSortedMaps
extends java.lang.Object

A class providing static methods and objects that do useful things with type-specific sorted maps.

See Also:

Collections

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Double2LongSortedMaps.EmptySortedMap An immutable class representing an empty type-specific sorted map.
static class	Double2LongSortedMaps.Singleton An immutable class representing a type-specific singleton sorted map.
static class	Double2LongSortedMaps.SynchronizedSortedMap A synchronized wrapper class for sorted maps.
static class	Double2LongSortedMaps.UnmodifiableSortedMap An unmodifiable wrapper class for sorted maps.

Field Summary

Fields

Modifier and Type	Field and Description
static Double2LongSortedMaps.EmptySortedMap	EMPTY_MAP An empty sorted map (immutable).

Method Summary

Modifier and Type	Method and Description
static java.util.Comparator<? super java.util.Map.Entry<java.lang.Double,?>>	entryComparator(DoubleComparator comparator) Returns a comparator for entries based on a given comparator on keys.
static ObjectBidirectionalIterable<Double2LongMap.Entry>	fastIterable(Double2LongSortedMap map) Returns an iterable yielding a bidirectional iterator that will be fast, if possible, on the entry set of the provided map.
static ObjectBidirectionalIterator<Double2LongMap.Entry>	fastIterator(Double2LongSortedMap map) Returns a bidirectional iterator that will be fast, if possible, on the entry set of the provided map.
static Double2LongSortedMap	singleton(double key, long value) Returns a type-specific immutable sorted map containing only the specified pair.
static Double2LongSortedMap	singleton(java.lang.Double key, java.lang.Long value) Returns a type-specific immutable sorted map containing only the specified pair.
static Double2LongSortedMap	singleton(double key, long value, DoubleComparator comparator) Returns a type-specific immutable sorted map containing only the specified pair.
static Double2LongSortedMap	singleton(java.lang.Double key, java.lang.Long value, DoubleComparator comparator) RETURNS a type-specific immutable sorted map containing only the specified pair.
static Double2LongSortedMap	synchronize(Double2LongSortedMap m) Returns a synchronized type-specific sorted map backed by the given type-specific sorted map.
static Double2LongSortedMap	synchronize(Double2LongSortedMap m, java.lang.Object sync) Returns a synchronized type-specific sorted map backed by the given type-specific sorted map, using an assigned object to synchronize.
static Double2LongSortedMap	unmodifiable(Double2LongSortedMap m) Returns an unmodifiable type-specific sorted map backed by the given type-specific sorted map.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EMPTY_MAP

public static final Double2LongSortedMaps.EmptySortedMap EMPTY_MAP

An empty sorted map (immutable). It is serializable and cloneable.

Method Detail

entryComparator

public static java.util.Comparator<? super java.util.Map.Entry<java.lang.Double,?>> entryComparator(DoubleComparator comparator)

Returns a comparator for entries based on a given comparator on keys.

Parameters:

comparator - a comparator on keys.

Returns:

the associated comparator on entries.

fastIterator

public static ObjectBidirectionalIterator<Double2LongMap.Entry> fastIterator(Double2LongSortedMap map)

Returns a bidirectional iterator that will be fast, if possible, on the entry set of the provided map.

Parameters:

map - a map from which we will try to extract a (fast) bidirectional iterator on the entry set.

Returns:

a bidirectional iterator on the entry set of the given map that will be fast, if possible.

Since:

8.0.0

fastIterable

public static ObjectBidirectionalIterable<Double2LongMap.Entry> fastIterable(Double2LongSortedMap map)

Returns an iterable yielding a bidirectional iterator that will be fast, if possible, on the entry set of the provided map.

Parameters:

map - a map from which we will try to extract an iterable yielding a (fast) bidirectional iterator on the entry set.

Returns:

an iterable yielding a bidirectional iterator on the entry set of the given map that will be fast, if possible.

Since:

8.0.0

singleton

public static Double2LongSortedMap singleton(java.lang.Double key,
                                             java.lang.Long value)

Returns a type-specific immutable sorted map containing only the specified pair. The returned sorted 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 sorted map.

value - the only value of the returned sorted map.

Returns:

a type-specific immutable sorted map containing just the pair <key,value>.

singleton

public static Double2LongSortedMap singleton(java.lang.Double key,
                                             java.lang.Long value,
                                             DoubleComparator comparator)

RETURNS a type-specific immutable sorted map containing only the specified pair. The returned sorted 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 sorted map.

value - the only value of the returned sorted map.

comparator - the comparator to use in the returned sorted map.

Returns:

a type-specific immutable sorted map containing just the pair <key,value>.

singleton

public static Double2LongSortedMap singleton(double key,
                                             long value)

Returns a type-specific immutable sorted map containing only the specified pair. The returned sorted 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 sorted map.

value - the only value of the returned sorted map.

Returns:

a type-specific immutable sorted map containing just the pair <key,value>.

singleton

public static Double2LongSortedMap singleton(double key,
                                             long value,
                                             DoubleComparator comparator)

Returns a type-specific immutable sorted map containing only the specified pair. The returned sorted 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 sorted map.

value - the only value of the returned sorted map.

comparator - the comparator to use in the returned sorted map.

Returns:

a type-specific immutable sorted map containing just the pair <key,value>.

synchronize

public static Double2LongSortedMap synchronize(Double2LongSortedMap m)

Returns a synchronized type-specific sorted map backed by the given type-specific sorted map.

Parameters:

m - the sorted map to be wrapped in a synchronized sorted map.

Returns:

a synchronized view of the specified sorted map.

See Also:

Collections.synchronizedSortedMap(SortedMap)

synchronize

public static Double2LongSortedMap synchronize(Double2LongSortedMap m,
                                               java.lang.Object sync)

Returns a synchronized type-specific sorted map backed by the given type-specific sorted map, using an assigned object to synchronize.

Parameters:

m - the sorted map to be wrapped in a synchronized sorted map.

sync - an object that will be used to synchronize the access to the sorted sorted map.

Returns:

a synchronized view of the specified sorted map.

See Also:

Collections.synchronizedSortedMap(SortedMap)

unmodifiable

public static Double2LongSortedMap unmodifiable(Double2LongSortedMap m)

Returns an unmodifiable type-specific sorted map backed by the given type-specific sorted map.

Parameters:

m - the sorted map to be wrapped in an unmodifiable sorted map.

Returns:

an unmodifiable view of the specified sorted map.

See Also:

Collections.unmodifiableSortedMap(SortedMap)