Reference2DoubleMaps.Singleton (fastutil 7.0.13)

java.lang.Object
- it.unimi.dsi.fastutil.objects.AbstractReference2DoubleFunction<K>
- - it.unimi.dsi.fastutil.objects.Reference2DoubleFunctions.Singleton<K>
  - - it.unimi.dsi.fastutil.objects.Reference2DoubleMaps.Singleton<K>

All Implemented Interfaces:

Function<K,java.lang.Double>, Reference2DoubleFunction<K>, Reference2DoubleMap<K>, java.io.Serializable, java.lang.Cloneable, java.util.Map<K,java.lang.Double>

Direct Known Subclasses:

Reference2DoubleSortedMaps.Singleton

Enclosing class:

Reference2DoubleMaps
```
public static class Reference2DoubleMaps.Singleton<K>
extends Reference2DoubleFunctions.Singleton<K>
implements Reference2DoubleMap<K>, java.io.Serializable, java.lang.Cloneable
```
An immutable class representing a type-specific singleton 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.objects.Reference2DoubleMap
  Reference2DoubleMap.Entry<K>, Reference2DoubleMap.FastEntrySet<K>

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`containsValue(double v)`
`boolean`	`containsValue(java.lang.Object ov)`
`ObjectSet<java.util.Map.Entry<K,java.lang.Double>>`	`entrySet()` Returns a set view of the mappings contained in this map.
`boolean`	`equals(java.lang.Object o)`
`int`	`hashCode()`
`boolean`	`isEmpty()`
`ReferenceSet<K>`	`keySet()` Returns a set view of the keys contained in this map.
`void`	`putAll(java.util.Map<? extends K,? extends java.lang.Double> m)`
`ObjectSet<Reference2DoubleMap.Entry<K>>`	`reference2DoubleEntrySet()` Returns a type-specific set view of the mappings contained in this map.
`java.lang.String`	`toString()`
`DoubleCollection`	`values()` Returns a set view of the values contained in this map.

Methods inherited from class it.unimi.dsi.fastutil.objects.Reference2DoubleFunctions.Singleton
clone, containsKey, getDouble, size

Methods inherited from class it.unimi.dsi.fastutil.objects.AbstractReference2DoubleFunction
clear, defaultReturnValue, defaultReturnValue, get, put, put, remove, removeDouble

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

Methods inherited from interface it.unimi.dsi.fastutil.objects.Reference2DoubleFunction
defaultReturnValue, defaultReturnValue, getDouble, put, removeDouble

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(double v)
```
    Specified by:
    
    containsValue in interface Reference2DoubleMap<K>
    
    See Also:
    
    Map.containsValue(Object)
  - containsValue
```
public boolean containsValue(java.lang.Object ov)
```
    Specified by:
    
    containsValue in interface java.util.Map<K,java.lang.Double>
  - putAll
```
public void putAll(java.util.Map<? extends K,? extends java.lang.Double> m)
```
    Specified by:
    
    putAll in interface java.util.Map<K,java.lang.Double>
  - reference2DoubleEntrySet
```
public ObjectSet<Reference2DoubleMap.Entry<K>> reference2DoubleEntrySet()
```
    Description copied from interface: Reference2DoubleMap
    
    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 Reference2DoubleMap.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:
    
    reference2DoubleEntrySet in interface Reference2DoubleMap<K>
    
    Returns:
    
    a type-specific set view of the mappings contained in this map.
    
    See Also:
    
    Reference2DoubleMap.entrySet()
  - keySet
```
public ReferenceSet<K> keySet()
```
    Description copied from interface: Reference2DoubleMap
    
    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 Reference2DoubleMap<K>
    
    Specified by:
    
    keySet in interface java.util.Map<K,java.lang.Double>
    
    Returns:
    
    a set view of the keys contained in this map.
    
    See Also:
    
    Map.keySet()
  - values
```
public DoubleCollection values()
```
    Description copied from interface: Reference2DoubleMap
    
    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 Reference2DoubleMap<K>
    
    Specified by:
    
    values in interface java.util.Map<K,java.lang.Double>
    
    Returns:
    
    a set view of the values contained in this map.
    
    See Also:
    
    Map.values()
  - isEmpty
```
public boolean isEmpty()
```
    Specified by:
    
    isEmpty in interface java.util.Map<K,java.lang.Double>
  - entrySet
```
public ObjectSet<java.util.Map.Entry<K,java.lang.Double>> entrySet()
```
    Description copied from interface: Reference2DoubleMap
    
    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 Reference2DoubleMap<K>
    
    Specified by:
    
    entrySet in interface java.util.Map<K,java.lang.Double>
    
    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<K,java.lang.Double>
    
    Overrides:
    
    hashCode in class java.lang.Object
  - equals
```
public boolean equals(java.lang.Object o)
```
    Specified by:
    
    equals in interface java.util.Map<K,java.lang.Double>
    
    Overrides:
    
    equals in class java.lang.Object
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object

Class Reference2DoubleMaps.Singleton<K>

Nested Class Summary

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.objects.Reference2DoubleMap

Method Summary

Methods inherited from class it.unimi.dsi.fastutil.objects.Reference2DoubleFunctions.Singleton

Methods inherited from class it.unimi.dsi.fastutil.objects.AbstractReference2DoubleFunction

Methods inherited from class java.lang.Object

Methods inherited from interface it.unimi.dsi.fastutil.objects.Reference2DoubleFunction

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

Methods inherited from interface java.util.Map

Method Detail

containsValue

containsValue

putAll

reference2DoubleEntrySet

keySet

values

isEmpty

entrySet

hashCode

equals

toString