Package it.unimi.dsi.fastutil.longs

Class Long2BooleanFunctions.Singleton

java.lang.Object

it.unimi.dsi.fastutil.longs.AbstractLong2BooleanFunction

it.unimi.dsi.fastutil.longs.Long2BooleanFunctions.Singleton

All Implemented Interfaces:

it.unimi.dsi.fastutil.Function<java.lang.Long,java.lang.Boolean>, Long2BooleanFunction, java.io.Serializable, java.lang.Cloneable, java.util.function.Function<java.lang.Long,java.lang.Boolean>, java.util.function.LongPredicate

Direct Known Subclasses:

Long2BooleanMaps.Singleton

Enclosing class:

Long2BooleanFunctions

public static class Long2BooleanFunctions.Singleton
extends AbstractLong2BooleanFunction
implements java.io.Serializable, java.lang.Cloneable

An immutable class representing a type-specific singleton function. Note that the default return value is still settable.

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

This class may be useful to implement your own in case you subclass a type-specific function.

See Also:

Serialized Form

Method Summary

Modifier and Type	Method	Description
java.lang.Object	clone()
boolean	containsKey(long k)	Returns true if this function contains a mapping for the specified key.
boolean	get(long k)	Returns the value to which the given key is mapped.
boolean	getOrDefault(long k, boolean defaultValue)	Returns the value associated by this function to the specified key, or give the specified value if not present.
int	size()

Methods inherited from class it.unimi.dsi.fastutil.longs.AbstractLong2BooleanFunction

defaultReturnValue, defaultReturnValue

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

Methods inherited from interface it.unimi.dsi.fastutil.longs.Long2BooleanFunction

andThen, andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, compose, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort, containsKey, get, getOrDefault, put, put, remove, remove, test

Methods inherited from interface java.util.function.LongPredicate

and, negate, or

Method Details

containsKey

public boolean containsKey(long k)

Description copied from interface: Long2BooleanFunction

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 Long2BooleanFunction

Parameters:

k - the key.

Returns:

true if this function associates a value to key.

See Also:

Function.containsKey(Object)

get

public boolean get(long k)

Description copied from interface: Long2BooleanFunction

Returns the value to which the given key is mapped.

Specified by:

get in interface Long2BooleanFunction

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)

getOrDefault

public boolean getOrDefault(long k,
boolean defaultValue)

Description copied from interface: Long2BooleanFunction

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

Specified by:

getOrDefault in interface Long2BooleanFunction

Parameters:

k - 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)

size

public int size()

Specified by:

size in interface it.unimi.dsi.fastutil.Function<java.lang.Long,java.lang.Boolean>

clone

public java.lang.Object clone()