it.unimi.dsi.fastutil.objects

Class Object2FloatFunctions.SynchronizedFunction<K>

java.lang.Object

it.unimi.dsi.fastutil.objects.AbstractObject2FloatFunction<K>

it.unimi.dsi.fastutil.objects.Object2FloatFunctions.SynchronizedFunction<K>

All Implemented Interfaces:

Function<K,Float>, Object2FloatFunction<K>, Serializable

Direct Known Subclasses:

Object2FloatMaps.SynchronizedMap

Enclosing class:

Object2FloatFunctions

public static class Object2FloatFunctions.SynchronizedFunction<K>
extends AbstractObject2FloatFunction<K>
implements Serializable

A synchronized wrapper class for functions.

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
void	clear() Removes all associations from this function (optional operation).
boolean	containsKey(Object k) Returns true if this function contains a mapping for the specified key.
float	defaultReturnValue() Gets the default return value.
void	defaultReturnValue(float defRetValue) Sets the default return value.
Float	get(Object k) Delegates to the corresponding type-specific method, taking care of returning null on a missing key.
float	getFloat(Object k) Returns the value to which the given key is mapped.
float	put(K k, float v) Adds a pair to the map.
Float	put(K k, Float v) Delegates to the corresponding type-specific method, taking care of returning null on a missing key.
Float	remove(Object k) Delegates to the corresponding type-specific method, taking care of returning null on a missing key.
float	removeFloat(Object k) Removes the mapping with the given key.
int	size() Returns the intended number of keys in this function, or -1 if no such number exists.
String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

size

public int size()

Description copied from interface: Function

Returns the intended number of keys in this function, or -1 if no such number exists.

Most function implementations will have some knowledge of the intended number of keys in their domain. In some cases, however, this might not be possible.

Specified by:

size in interface Function<K,Float>

Returns:

the intended number of keys in this function, or -1 if that number is not available.

containsKey

public boolean containsKey(Object k)

Description copied from interface: Function

Returns true if this function contains a mapping for the specified key.

Note that for some kind of functions (e.g., hashes) this method will always return true.

Specified by:

containsKey in interface Function<K,Float>

Parameters:

k - the key.

Returns:

true if this function associates a value to key.

See Also:

Map.containsKey(Object)

defaultReturnValue

public float defaultReturnValue()

Description copied from interface: Object2FloatFunction

Gets the default return value.

Specified by:

defaultReturnValue in interface Object2FloatFunction<K>

Overrides:

defaultReturnValue in class AbstractObject2FloatFunction<K>

Returns:

the current default return value.

defaultReturnValue

public void defaultReturnValue(float defRetValue)

Description copied from interface: Object2FloatFunction

Sets the default return value. This value must be returned by type-specific versions of get(), put() and remove() to denote that the map does not contain the specified key. It must be 0/false/null by default.

Specified by:

defaultReturnValue in interface Object2FloatFunction<K>

Overrides:

defaultReturnValue in class AbstractObject2FloatFunction<K>

Parameters:

defRetValue - the new default return value.

See Also:

Object2FloatFunction.defaultReturnValue()

put

public float put(K k,
                 float v)

Description copied from interface: Object2FloatFunction

Adds a pair to the map.

Specified by:

put in interface Object2FloatFunction<K>

Overrides:

put in class AbstractObject2FloatFunction<K>

Parameters:

k - the key.

v - the value.

Returns:

the old value, or the default return value if no value was present for the given key.

See Also:

Function.put(Object,Object)

clear

public void clear()

Description copied from interface: Function

Removes all associations from this function (optional operation).

Specified by:

clear in interface Function<K,Float>

Overrides:

clear in class AbstractObject2FloatFunction<K>

See Also:

Map.clear()

toString

public String toString()

Overrides:

toString in class Object

put

public Float put(K k,
                 Float v)

Description copied from class: AbstractObject2FloatFunction

Delegates to the corresponding type-specific method, taking care of returning null on a missing key.

This method must check whether the provided key is in the map using containsKey(). Thus, it probes the map twice. Implementors of subclasses should override it with a more efficient method.

Specified by:

put in interface Function<K,Float>

Overrides:

put in class AbstractObject2FloatFunction<K>

Parameters:

k - the key.

v - the value.

Returns:

the old value, or null if no value was present for the given key.

See Also:

Map.put(Object,Object)

get

public Float get(Object k)

Description copied from class: AbstractObject2FloatFunction

Delegates to the corresponding type-specific method, taking care of returning null on a missing key.

This method must check whether the provided key is in the map using containsKey(). Thus, it probes the map twice. Implementors of subclasses should override it with a more efficient method.

Specified by:

get in interface Function<K,Float>

Overrides:

get in class AbstractObject2FloatFunction<K>

Parameters:

k - the key.

Returns:

the corresponding value, or null if no value was present for the given key.

See Also:

Map.get(Object)

remove

public Float remove(Object k)

Description copied from class: AbstractObject2FloatFunction

Delegates to the corresponding type-specific method, taking care of returning null on a missing key.

This method must check whether the provided key is in the map using containsKey(). Thus, it probes the map twice. Implementors of subclasses should override it with a more efficient method.

Specified by:

remove in interface Function<K,Float>

Overrides:

remove in class AbstractObject2FloatFunction<K>

Parameters:

k - the key.

Returns:

the old value, or null if no value was present for the given key.

See Also:

Map.remove(Object)

removeFloat

public float removeFloat(Object k)

Description copied from interface: Object2FloatFunction

Removes the mapping with the given key.

Specified by:

removeFloat in interface Object2FloatFunction<K>

Overrides:

removeFloat in class AbstractObject2FloatFunction<K>

Parameters:

k - the key.

Returns:

the old value, or the default return value if no value was present for the given key.

See Also:

Function.remove(Object)

getFloat

public float getFloat(Object k)

Description copied from interface: Object2FloatFunction

Returns the value to which the given key is mapped.

Specified by:

getFloat in interface Object2FloatFunction<K>

Parameters:

k - the key.

Returns:

the corresponding value, or the default return value if no value was present for the given key.

See Also:

Function.get(Object)