Package it.unimi.dsi.fastutil.longs

Class AbstractLong2BooleanFunction

java.lang.Object

it.unimi.dsi.fastutil.longs.AbstractLong2BooleanFunction

All Implemented Interfaces:

Function<Long,Boolean>, Long2BooleanFunction, Serializable, Function<Long,Boolean>, LongPredicate

Direct Known Subclasses:

AbstractLong2BooleanMap, Long2BooleanFunctions.EmptyFunction, Long2BooleanFunctions.Singleton, Long2BooleanFunctions.UnmodifiableFunction

public abstract class AbstractLong2BooleanFunction
extends Object
implements Long2BooleanFunction, Serializable

An abstract class providing basic methods for functions implementing a type-specific interface.

This class handles directly a default return value (including methods to access it). Instances of classes inheriting from this class have just to return defRetValue to denote lack of a key in type-specific methods. The value is serialized.

Implementing subclasses have just to provide type-specific get(), type-specific containsKey(), and size() methods.

See Also:

• Serialized Form

Method Summary

Modifier and Type	Method	Description
boolean	defaultReturnValue()	Gets the default return value.
void	defaultReturnValue(boolean rv)	Sets the default return value (optional operation).

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 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, containsKey, get, get, getOrDefault, getOrDefault, put, put, remove, remove, test

Methods inherited from interface java.util.function.LongPredicate

and, negate, or

Method Details

defaultReturnValue

public void defaultReturnValue(boolean rv)

Description copied from interface: Long2BooleanFunction

Sets the default return value (optional operation). 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 Long2BooleanFunction

Parameters:

rv - the new default return value.

See Also:

• Long2BooleanFunction.defaultReturnValue()

defaultReturnValue

public boolean defaultReturnValue()

Description copied from interface: Long2BooleanFunction

Gets the default return value.

This default implementation just return the default null value of the type (null for objects, 0 for scalars, false for Booleans).

Specified by:

defaultReturnValue in interface Long2BooleanFunction

Returns:

the current default return value.