it.unimi.dsi.fastutil.objects.AbstractReference2BooleanFunction<K>

All Implemented Interfaces:: Function<K,Boolean>, Reference2BooleanFunction<K>, Serializable, Function<K,Boolean>, Predicate<K>

Direct Known Subclasses:: AbstractReference2BooleanMap, Reference2BooleanFunctions.EmptyFunction, Reference2BooleanFunctions.Singleton, Reference2BooleanFunctions.UnmodifiableFunction

public abstract class AbstractReference2BooleanFunction<K>
extends Object
implements Reference2BooleanFunction<K>, 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, containsKey, size

Methods inherited from interface java.util.function.Function

andThen, compose

Methods inherited from interface java.util.function.Predicate

and, negate, or

Methods inherited from interface it.unimi.dsi.fastutil.objects.Reference2BooleanFunction

get, getBoolean, put, put, remove, removeBoolean, test

Method Details
- defaultReturnValue
  
  public void defaultReturnValue(boolean rv)
  
  Description copied from interface: Reference2BooleanFunction
  
  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 Reference2BooleanFunction<K>
  
  Parameters:
  
  rv - the new default return value.
  
  See Also:
  
  Reference2BooleanFunction.defaultReturnValue()
- defaultReturnValue
  
  public boolean defaultReturnValue()
  
  Description copied from interface: Reference2BooleanFunction
  
  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 Reference2BooleanFunction<K>
  
  Returns:
  
  the current default return value.

Class AbstractReference2BooleanFunction<K>