Package it.unimi.dsi.fastutil.ints
Class AbstractInt2ReferenceFunction<V>
- java.lang.Object
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- it.unimi.dsi.fastutil.ints.AbstractInt2ReferenceFunction<V>
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- All Implemented Interfaces:
Function<Integer,V>
,Int2ReferenceFunction<V>
,Serializable
,Function<Integer,V>
,IntFunction<V>
- Direct Known Subclasses:
AbstractInt2ReferenceMap
,Int2ReferenceFunctions.EmptyFunction
,Int2ReferenceFunctions.Singleton
,Int2ReferenceFunctions.UnmodifiableFunction
public abstract class AbstractInt2ReferenceFunction<V> extends Object implements Int2ReferenceFunction<V>, 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-specificcontainsKey()
, andsize()
methods.- See Also:
- Serialized Form
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description V
defaultReturnValue()
Gets the default return value.void
defaultReturnValue(V rv)
Sets the default return value (optional operation).-
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface it.unimi.dsi.fastutil.ints.Int2ReferenceFunction
apply, containsKey, containsKey, get, get, put, put, remove, remove
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Method Detail
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defaultReturnValue
public void defaultReturnValue(V rv)
Description copied from interface:Int2ReferenceFunction
Sets the default return value (optional operation). This value must be returned by type-specific versions ofget()
,put()
andremove()
to denote that the map does not contain the specified key. It must be 0/false
/null
by default.- Specified by:
defaultReturnValue
in interfaceInt2ReferenceFunction<V>
- Parameters:
rv
- the new default return value.- See Also:
Int2ReferenceFunction.defaultReturnValue()
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defaultReturnValue
public V defaultReturnValue()
Description copied from interface:Int2ReferenceFunction
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 interfaceInt2ReferenceFunction<V>
- Returns:
- the current default return value.
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