java.lang.Object
- it.unimi.dsi.fastutil.doubles.AbstractDouble2FloatFunction
- - it.unimi.dsi.fastutil.doubles.Double2FloatFunctions.EmptyFunction
  - - it.unimi.dsi.fastutil.doubles.Double2FloatMaps.EmptyMap

All Implemented Interfaces:

Double2FloatFunction, Double2FloatMap, Function<java.lang.Double,java.lang.Float>, java.io.Serializable, java.lang.Cloneable, java.util.function.DoubleUnaryOperator, java.util.function.Function<java.lang.Double,java.lang.Float>, java.util.Map<java.lang.Double,java.lang.Float>

Direct Known Subclasses:

Double2FloatSortedMaps.EmptySortedMap

Enclosing class:

Double2FloatMaps
```
public static class Double2FloatMaps.EmptyMap
extends Double2FloatFunctions.EmptyFunction
implements Double2FloatMap, 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.Double2FloatMap
  Double2FloatMap.Entry, Double2FloatMap.FastEntrySet

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`java.lang.Object`	`clone()`
`boolean`	`containsValue(float v)`	Returns `true` if this map maps one or more keys to the specified value.
`boolean`	`containsValue(java.lang.Object ov)`	Deprecated. Please use the corresponding type-specific method instead.
`ObjectSet<Double2FloatMap.Entry>`	`double2FloatEntrySet()`	Returns a type-specific set view of the mappings contained in this map.
`boolean`	`equals(java.lang.Object o)`
`int`	`hashCode()`
`boolean`	`isEmpty()`
`DoubleSet`	`keySet()`
`void`	`putAll(java.util.Map<? extends java.lang.Double,? extends java.lang.Float> m)`
`java.lang.String`	`toString()`
`FloatCollection`	`values()`

Methods inherited from class it.unimi.dsi.fastutil.doubles.Double2FloatFunctions.EmptyFunction
clear, containsKey, defaultReturnValue, defaultReturnValue, get, size

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

Methods inherited from interface it.unimi.dsi.fastutil.doubles.Double2FloatFunction
applyAsDouble, get, put, remove

Methods inherited from interface it.unimi.dsi.fastutil.doubles.Double2FloatMap
clear, compute, compute, computeIfAbsent, computeIfAbsent, computeIfAbsentNullable, computeIfAbsentPartial, computeIfPresent, computeIfPresent, containsKey, containsKey, defaultReturnValue, defaultReturnValue, entrySet, get, getOrDefault, getOrDefault, merge, merge, put, putIfAbsent, putIfAbsent, remove, remove, remove, replace, replace, replace, replace, size

Methods inherited from interface java.util.function.DoubleUnaryOperator
andThen, compose

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

Methods inherited from interface java.util.function.Function
andThen, compose

Methods inherited from interface java.util.Map
forEach, replaceAll

- Method Detail
  - containsValue
```
public boolean containsValue(float v)
```
    Description copied from interface: Double2FloatMap
    
    Returns true if this map maps one or more keys to the specified value.
    
    Specified by:
    
    containsValue in interface Double2FloatMap
    
    See Also:
    
    Map.containsValue(Object)
  - containsValue
```
@Deprecated
public boolean containsValue(java.lang.Object ov)
```
    Deprecated.
    Please use the corresponding type-specific method instead.
    
    Specified by:
    
    containsValue in interface Double2FloatMap
    
    Specified by:
    
    containsValue in interface java.util.Map<java.lang.Double,java.lang.Float>
  - putAll
```
public void putAll(java.util.Map<? extends java.lang.Double,? extends java.lang.Float> m)
```
    Specified by:
    
    putAll in interface java.util.Map<java.lang.Double,java.lang.Float>
  - double2FloatEntrySet
```
public ObjectSet<Double2FloatMap.Entry> double2FloatEntrySet()
```
    Description copied from interface: Double2FloatMap
    
    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 Map.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:
    
    double2FloatEntrySet in interface Double2FloatMap
    
    Returns:
    
    a type-specific set view of the mappings contained in this map.
    
    See Also:
    
    Map.entrySet()
  - keySet
```
public DoubleSet keySet()
```
    Description copied from interface: Double2FloatMap
    
    Note that this specification strengthens the one given in Map.keySet().
    
    Specified by:
    
    keySet in interface Double2FloatMap
    
    Specified by:
    
    keySet in interface java.util.Map<java.lang.Double,java.lang.Float>
    
    Returns:
    
    a set view of the keys contained in this map.
    
    See Also:
    
    Map.keySet()
  - values
```
public FloatCollection values()
```
    Description copied from interface: Double2FloatMap
    
    Note that this specification strengthens the one given in Map.values().
    
    Specified by:
    
    values in interface Double2FloatMap
    
    Specified by:
    
    values in interface java.util.Map<java.lang.Double,java.lang.Float>
    
    Returns:
    
    a set view of the values contained in this map.
    
    See Also:
    
    Map.values()
  - clone
```
public java.lang.Object clone()
```
    Overrides:
    
    clone in class Double2FloatFunctions.EmptyFunction
  - isEmpty
```
public boolean isEmpty()
```
    Specified by:
    
    isEmpty in interface java.util.Map<java.lang.Double,java.lang.Float>
  - hashCode
```
public int hashCode()
```
    Specified by:
    
    hashCode in interface java.util.Map<java.lang.Double,java.lang.Float>
    
    Overrides:
    
    hashCode in class Double2FloatFunctions.EmptyFunction
  - equals
```
public boolean equals(java.lang.Object o)
```
    Specified by:
    
    equals in interface java.util.Map<java.lang.Double,java.lang.Float>
    
    Overrides:
    
    equals in class Double2FloatFunctions.EmptyFunction
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class Double2FloatFunctions.EmptyFunction

Class Double2FloatMaps.EmptyMap

Nested Class Summary

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.doubles.Double2FloatMap

Method Summary

Methods inherited from class it.unimi.dsi.fastutil.doubles.Double2FloatFunctions.EmptyFunction

Methods inherited from class java.lang.Object

Methods inherited from interface it.unimi.dsi.fastutil.doubles.Double2FloatFunction

Methods inherited from interface it.unimi.dsi.fastutil.doubles.Double2FloatMap

Methods inherited from interface java.util.function.DoubleUnaryOperator

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

Methods inherited from interface java.util.function.Function

Methods inherited from interface java.util.Map

Method Detail

containsValue

containsValue

putAll

double2FloatEntrySet

keySet

values

clone

isEmpty

hashCode

equals

toString