Package it.unimi.dsi.fastutil.objects

Class Reference2IntFunctions.PrimitiveFunction<K>

java.lang.Object

it.unimi.dsi.fastutil.objects.Reference2IntFunctions.PrimitiveFunction<K>

All Implemented Interfaces:

Function<K,Integer>, Reference2IntFunction<K>, Function<K,Integer>, ToIntFunction<K>

Enclosing class:

Reference2IntFunctions

public static class Reference2IntFunctions.PrimitiveFunction<K>
extends Object
implements Reference2IntFunction<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.
Integer	get(Object key)	Deprecated.
int	getInt(Object key)	Returns the value to which the given key is mapped.
int	getOrDefault(Object key, int defaultValue)	Returns the value associated by this function to the specified key, or give the specified value if not present.
Integer	getOrDefault(Object key, Integer defaultValue)	Deprecated.
Integer	put(K key, Integer 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.Reference2IntFunction

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

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,Integer>

Parameters:

key - the key.

Returns:

true if this function associates a value to key.

See Also:

• Map.containsKey(Object)

getInt

public int getInt(Object key)

Description copied from interface: Reference2IntFunction

Returns the value to which the given key is mapped.

Specified by:

getInt in interface Reference2IntFunction<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 int getOrDefault(Object key,
 int defaultValue)

Description copied from interface: Reference2IntFunction

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

Specified by:

getOrDefault in interface Reference2IntFunction<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 Integer get(Object key)

Deprecated.

Description copied from interface: Reference2IntFunction

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

Specified by:

get in interface Function<K,Integer>

Specified by:

get in interface Reference2IntFunction<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 Integer getOrDefault(Object key,
 Integer defaultValue)

Deprecated.

Description copied from interface: Reference2IntFunction

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,Integer>

Specified by:

getOrDefault in interface Reference2IntFunction<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 Integer put(K key,
 Integer value)

Deprecated.

Description copied from interface: Reference2IntFunction

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

Specified by:

put in interface Function<K,Integer>

Specified by:

put in interface Reference2IntFunction<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)