Double2LongMaps.EmptyMap (fastutil 7.0.13)

java.lang.Object
- it.unimi.dsi.fastutil.doubles.AbstractDouble2LongFunction
- - it.unimi.dsi.fastutil.doubles.Double2LongFunctions.EmptyFunction
  - - it.unimi.dsi.fastutil.doubles.Double2LongMaps.EmptyMap

All Implemented Interfaces:

Double2LongFunction, Double2LongMap, Function<java.lang.Double,java.lang.Long>, java.io.Serializable, java.lang.Cloneable, java.util.Map<java.lang.Double,java.lang.Long>

Direct Known Subclasses:

Double2LongSortedMaps.EmptySortedMap

Enclosing class:

Double2LongMaps
```
public static class Double2LongMaps.EmptyMap
extends Double2LongFunctions.EmptyFunction
implements Double2LongMap, java.io.Serializable, java.lang.Cloneable
```
An immutable class representing an empty type-specific map.
This class may be useful to implement your own in case you subclass a type-specific map.

See Also:

Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.doubles.Double2LongMap
  Double2LongMap.Entry, Double2LongMap.FastEntrySet

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`java.lang.Object`	`clone()`
`boolean`	`containsValue(long v)`
`boolean`	`containsValue(java.lang.Object ov)`
`ObjectSet<Double2LongMap.Entry>`	`double2LongEntrySet()` Returns a type-specific set view of the mappings contained in this map.
`ObjectSet<java.util.Map.Entry<java.lang.Double,java.lang.Long>>`	`entrySet()` Returns a set view of the mappings contained in this map.
`boolean`	`equals(java.lang.Object o)`
`int`	`hashCode()`
`boolean`	`isEmpty()`
`DoubleSet`	`keySet()` Returns a set view of the keys contained in this map.
`void`	`putAll(java.util.Map<? extends java.lang.Double,? extends java.lang.Long> m)`
`java.lang.String`	`toString()`
`LongCollection`	`values()` Returns a set view of the values contained in this map.

Methods inherited from class it.unimi.dsi.fastutil.doubles.Double2LongFunctions.EmptyFunction
clear, containsKey, defaultReturnValue, defaultReturnValue, get, get, size

Methods inherited from class it.unimi.dsi.fastutil.doubles.AbstractDouble2LongFunction
containsKey, put, put, remove, remove

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface it.unimi.dsi.fastutil.doubles.Double2LongFunction
containsKey, defaultReturnValue, defaultReturnValue, get, put, remove

Methods inherited from interface it.unimi.dsi.fastutil.Function
clear, containsKey, get, put, remove, size

Methods inherited from interface java.util.Map
clear, compute, computeIfAbsent, computeIfPresent, containsKey, forEach, get, getOrDefault, merge, put, putIfAbsent, remove, remove, replace, replace, replaceAll, size

- Method Detail
  - containsValue
```
public boolean containsValue(long v)
```
    Specified by:
    
    containsValue in interface Double2LongMap
    
    See Also:
    
    Map.containsValue(Object)
  - putAll
```
public void putAll(java.util.Map<? extends java.lang.Double,? extends java.lang.Long> m)
```
    Specified by:
    
    putAll in interface java.util.Map<java.lang.Double,java.lang.Long>
  - double2LongEntrySet
```
public ObjectSet<Double2LongMap.Entry> double2LongEntrySet()
```
    Description copied from interface: Double2LongMap
    
    Returns a type-specific set view of the mappings contained in this map.
    This method is necessary because there is no inheritance along type parameters: it is thus impossible to strengthen Double2LongMap.entrySet() so that it returns an ObjectSet of type-specific entries (the latter makes it possible to access keys and values with type-specific methods).
    
    Specified by:
    
    double2LongEntrySet in interface Double2LongMap
    
    Returns:
    
    a type-specific set view of the mappings contained in this map.
    
    See Also:
    
    Double2LongMap.entrySet()
  - keySet
```
public DoubleSet keySet()
```
    Description copied from interface: Double2LongMap
    
    Returns a set view of the keys contained in this map.
    Note that this specification strengthens the one given in Map.keySet().
    
    Specified by:
    
    keySet in interface Double2LongMap
    
    Specified by:
    
    keySet in interface java.util.Map<java.lang.Double,java.lang.Long>
    
    Returns:
    
    a set view of the keys contained in this map.
    
    See Also:
    
    Map.keySet()
  - values
```
public LongCollection values()
```
    Description copied from interface: Double2LongMap
    
    Returns a set view of the values contained in this map.
    Note that this specification strengthens the one given in Map.values().
    
    Specified by:
    
    values in interface Double2LongMap
    
    Specified by:
    
    values in interface java.util.Map<java.lang.Double,java.lang.Long>
    
    Returns:
    
    a set view of the values contained in this map.
    
    See Also:
    
    Map.values()
  - containsValue
```
public boolean containsValue(java.lang.Object ov)
```
    Specified by:
    
    containsValue in interface java.util.Map<java.lang.Double,java.lang.Long>
  - clone
```
public java.lang.Object clone()
```
    Overrides:
    
    clone in class Double2LongFunctions.EmptyFunction
  - isEmpty
```
public boolean isEmpty()
```
    Specified by:
    
    isEmpty in interface java.util.Map<java.lang.Double,java.lang.Long>
  - entrySet
```
public ObjectSet<java.util.Map.Entry<java.lang.Double,java.lang.Long>> entrySet()
```
    Description copied from interface: Double2LongMap
    
    Returns a set view of the mappings contained in this map.
    Note that this specification strengthens the one given in Map.entrySet().
    
    Specified by:
    
    entrySet in interface Double2LongMap
    
    Specified by:
    
    entrySet in interface java.util.Map<java.lang.Double,java.lang.Long>
    
    Returns:
    
    a set view of the mappings contained in this map.
    
    See Also:
    
    Map.entrySet()
  - hashCode
```
public int hashCode()
```
    Specified by:
    
    hashCode in interface java.util.Map<java.lang.Double,java.lang.Long>
    
    Overrides:
    
    hashCode in class java.lang.Object
  - equals
```
public boolean equals(java.lang.Object o)
```
    Specified by:
    
    equals in interface java.util.Map<java.lang.Double,java.lang.Long>
    
    Overrides:
    
    equals in class java.lang.Object
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object

Class Double2LongMaps.EmptyMap

Nested Class Summary

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.doubles.Double2LongMap

Method Summary

Methods inherited from class it.unimi.dsi.fastutil.doubles.Double2LongFunctions.EmptyFunction

Methods inherited from class it.unimi.dsi.fastutil.doubles.AbstractDouble2LongFunction

Methods inherited from class java.lang.Object

Methods inherited from interface it.unimi.dsi.fastutil.doubles.Double2LongFunction

Methods inherited from interface it.unimi.dsi.fastutil.Function

Methods inherited from interface java.util.Map

Method Detail

containsValue

putAll

double2LongEntrySet

keySet

values

containsValue

clone

isEmpty

entrySet

hashCode

equals

toString