Package it.unimi.dsi.fastutil.objects

Class Reference2DoubleFunctions.PrimitiveFunction<K>

java.lang.Object

it.unimi.dsi.fastutil.objects.Reference2DoubleFunctions.PrimitiveFunction<K>

All Implemented Interfaces:

Function<K,Double>, Reference2DoubleFunction<K>, Function<K,Double>, ToDoubleFunction<K>

Enclosing class:

Reference2DoubleFunctions

public static class Reference2DoubleFunctions.PrimitiveFunction<K>
extends Object
implements Reference2DoubleFunction<K>

An adapter for mapping generic total functions to partial primitive functions.

Method Summary

Modifier and Type	Method	Description
boolean	containsKey(Object key)	Returns true if this function contains a mapping for the specified key.
Double	get(Object key)	Deprecated.
double	getDouble(Object key)	Returns the value to which the given key is mapped.
double	getOrDefault(Object key, double defaultValue)	Returns the value associated by this function to the specified key, or give the specified value if not present.
Double	getOrDefault(Object key, Double defaultValue)	Deprecated.
Double	put(K key, Double value)	Deprecated.

Methods inherited from class java.lang.Object

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

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

apply, clear, size

Methods inherited from interface java.util.function.Function

compose

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

andThen, andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, applyAsDouble, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort, defaultReturnValue, defaultReturnValue, put, remove, removeDouble

Method Details

containsKey

public boolean containsKey(Object key)

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. This default implementation, in particular, always return true.

Specified by:

containsKey in interface Function<K,Double>

Parameters:

key - the key.

Returns:

true if this function associates a value to key.

See Also:

• Map.containsKey(Object)

getDouble

public double getDouble(Object key)

Description copied from interface: Reference2DoubleFunction

Returns the value to which the given key is mapped.

Specified by:

getDouble in interface Reference2DoubleFunction<K>

Parameters:

key - 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)

getOrDefault

public double getOrDefault(Object key,
 double defaultValue)

Description copied from interface: Reference2DoubleFunction

Returns the value associated by this function to the specified key, or give the specified value if not present.

Specified by:

getOrDefault in interface Reference2DoubleFunction<K>

Parameters:

key - the key.

defaultValue - the value to return if not present.

Returns:

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

See Also:

• Function.getOrDefault(Object, Object)

get

@Deprecated
public Double get(Object key)

Deprecated.

Description copied from interface: Reference2DoubleFunction

Returns the value associated by this function to the specified key.

Specified by:

get in interface Function<K,Double>

Specified by:

get in interface Reference2DoubleFunction<K>

Parameters:

key - the key.

Returns:

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

See Also:

• Map.get(Object)

getOrDefault

@Deprecated
public Double getOrDefault(Object key,
 Double defaultValue)

Deprecated.

Description copied from interface: Reference2DoubleFunction

Returns the value associated by this function to the specified key, or give the specified value if not present.

Specified by:

getOrDefault in interface Function<K,Double>

Specified by:

getOrDefault in interface Reference2DoubleFunction<K>

Parameters:

key - the key.

defaultValue - the default value to return if not present.

Returns:

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

See Also:

• Map.getOrDefault(Object, Object)

put

@Deprecated
public Double put(K key,
 Double value)

Deprecated.

Description copied from interface: Reference2DoubleFunction

Associates the specified value with the specified key in this function (optional operation).

Specified by:

put in interface Function<K,Double>

Specified by:

put in interface Reference2DoubleFunction<K>

Parameters:

key - the key.

value - the value.

Returns:

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

See Also:

• Map.put(Object,Object)