Package it.unimi.dsi.fastutil.doubles

Class Double2DoubleFunctions.PrimitiveFunction

java.lang.Object

it.unimi.dsi.fastutil.doubles.Double2DoubleFunctions.PrimitiveFunction

All Implemented Interfaces:

Double2DoubleFunction, Function<Double,Double>, DoubleUnaryOperator, Function<Double,Double>

Enclosing class:

Double2DoubleFunctions

public static class Double2DoubleFunctions.PrimitiveFunction
extends Object
implements Double2DoubleFunction

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

Method Summary

Modifier and Type	Method	Description
boolean	containsKey(double key)	Returns true if this function contains a mapping for the specified key.
boolean	containsKey(Object key)	Deprecated.
double	get(double key)	Returns the value to which the given key is mapped.
Double	get(Object key)	Deprecated.
double	getOrDefault(double 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(Double 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.doubles.Double2DoubleFunction

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

Methods inherited from interface java.util.function.DoubleUnaryOperator

andThen, compose

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

apply, clear, size

Method Details

containsKey

public boolean containsKey(double key)

Description copied from interface: Double2DoubleFunction

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. In particular, this default implementation always returns true.

Specified by:

containsKey in interface Double2DoubleFunction

Parameters:

key - the key.

Returns:

true if this function associates a value to key.

See Also:

• Function.containsKey(Object)

containsKey

@Deprecated
public boolean containsKey(Object key)

Deprecated.

Description copied from interface: Double2DoubleFunction

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 Double2DoubleFunction

Specified by:

containsKey in interface Function<Double,Double>

Parameters:

key - the key.

Returns:

true if this function associates a value to key.

See Also:

• Map.containsKey(Object)

get

public double get(double key)

Description copied from interface: Double2DoubleFunction

Returns the value to which the given key is mapped.

Specified by:

get in interface Double2DoubleFunction

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(double key,
 double defaultValue)

Description copied from interface: Double2DoubleFunction

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

Specified by:

getOrDefault in interface Double2DoubleFunction

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: Double2DoubleFunction

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

Specified by:

get in interface Double2DoubleFunction

Specified by:

get in interface Function<Double,Double>

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: Double2DoubleFunction

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

Specified by:

getOrDefault in interface Double2DoubleFunction

Specified by:

getOrDefault in interface Function<Double,Double>

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(Double key,
 Double value)

Deprecated.

Description copied from interface: Double2DoubleFunction

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

Specified by:

put in interface Double2DoubleFunction

Specified by:

put in interface Function<Double,Double>

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)