it.unimi.dsi.fastutil.doubles
Class Double2CharFunctions

java.lang.Object
  extended by it.unimi.dsi.fastutil.doubles.Double2CharFunctions

public class Double2CharFunctions
extends java.lang.Object

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

See Also:
Function, Collections

Nested Class Summary
static class Double2CharFunctions.EmptyFunction
          An immutable class representing an empty type-specific function.
static class Double2CharFunctions.Singleton
          An immutable class representing a type-specific singleton function.
static class Double2CharFunctions.SynchronizedFunction
          A synchronized wrapper class for functions.
static class Double2CharFunctions.UnmodifiableFunction
          An unmodifiable wrapper class for functions.
 
Field Summary
static Double2CharFunctions.EmptyFunction EMPTY_FUNCTION
          An empty type-specific function (immutable).
 
Method Summary
static Double2CharFunction singleton(double key, char value)
          Returns a type-specific immutable function containing only the specified pair.
static Double2CharFunction singleton(java.lang.Double key, java.lang.Character value)
          Returns a type-specific immutable function containing only the specified pair.
static Double2CharFunction synchronize(Double2CharFunction f)
          Returns a synchronized type-specific function backed by the given type-specific function.
static Double2CharFunction synchronize(Double2CharFunction f, java.lang.Object sync)
          Returns a synchronized type-specific function backed by the given type-specific function, using an assigned object to synchronize.
static Double2CharFunction unmodifiable(Double2CharFunction f)
          Returns an unmodifiable type-specific function backed by the given type-specific function.
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

EMPTY_FUNCTION

public static final Double2CharFunctions.EmptyFunction EMPTY_FUNCTION
An empty type-specific function (immutable). It is serializable and cloneable.

Method Detail

singleton

public static Double2CharFunction singleton(double key,
                                            char value)
Returns a type-specific immutable function containing only the specified pair. The returned function is serializable and cloneable.

Note that albeit the returned function is immutable, its default return value may be changed.

Parameters:
key - the only key of the returned function.
value - the only value of the returned function.
Returns:
a type-specific immutable function containing just the pair <key,value>.

singleton

public static Double2CharFunction singleton(java.lang.Double key,
                                            java.lang.Character value)
Returns a type-specific immutable function containing only the specified pair. The returned function is serializable and cloneable.

Note that albeit the returned function is immutable, its default return value may be changed.

Parameters:
key - the only key of the returned function.
value - the only value of the returned function.
Returns:
a type-specific immutable function containing just the pair <key,value>.

synchronize

public static Double2CharFunction synchronize(Double2CharFunction f)
Returns a synchronized type-specific function backed by the given type-specific function.

Parameters:
f - the function to be wrapped in a synchronized function.
Returns:
a synchronized view of the specified function.
See Also:
Collections.synchronizedMap(java.util.Map)

synchronize

public static Double2CharFunction synchronize(Double2CharFunction f,
                                              java.lang.Object sync)
Returns a synchronized type-specific function backed by the given type-specific function, using an assigned object to synchronize.

Parameters:
f - the function to be wrapped in a synchronized function.
sync - an object that will be used to synchronize the access to the function.
Returns:
a synchronized view of the specified function.
See Also:
Collections.synchronizedMap(java.util.Map)

unmodifiable

public static Double2CharFunction unmodifiable(Double2CharFunction f)
Returns an unmodifiable type-specific function backed by the given type-specific function.

Parameters:
f - the function to be wrapped in an unmodifiable function.
Returns:
an unmodifiable view of the specified function.
See Also:
Collections.unmodifiableMap(java.util.Map)