it.unimi.dsi.fastutil.doubles
Class Double2LongMaps.EmptyMap

java.lang.Object
  extended by it.unimi.dsi.fastutil.doubles.AbstractDouble2LongFunction
      extended by it.unimi.dsi.fastutil.doubles.Double2LongFunctions.EmptyFunction
          extended by 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
 
Field Summary
static long serialVersionUID
           
 
Method Summary
 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, containsKey, get, put, remove, size
 

Field Detail

serialVersionUID

public static final long serialVersionUID
See Also:
Constant Field Values
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 objects of type Double2LongMap.Entry (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