Package it.unimi.dsi.fastutil.objects
Class AbstractReference2IntFunction<K>
- java.lang.Object
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- it.unimi.dsi.fastutil.objects.AbstractReference2IntFunction<K>
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- All Implemented Interfaces:
Function<K,Integer>
,Reference2IntFunction<K>
,Serializable
,Function<K,Integer>
,ToIntFunction<K>
- Direct Known Subclasses:
AbstractReference2IntMap
,Reference2IntFunctions.EmptyFunction
,Reference2IntFunctions.Singleton
,Reference2IntFunctions.UnmodifiableFunction
public abstract class AbstractReference2IntFunction<K> extends Object implements Reference2IntFunction<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-specificcontainsKey()
, andsize()
methods.- See Also:
- Serialized Form
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
defaultReturnValue()
Gets the default return value.void
defaultReturnValue(int 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.Function
apply, clear, containsKey, size
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Methods inherited from interface it.unimi.dsi.fastutil.objects.Reference2IntFunction
applyAsInt, get, getInt, put, put, remove, removeInt
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Method Detail
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defaultReturnValue
public void defaultReturnValue(int rv)
Description copied from interface:Reference2IntFunction
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 interfaceReference2IntFunction<K>
- Parameters:
rv
- the new default return value.- See Also:
Reference2IntFunction.defaultReturnValue()
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defaultReturnValue
public int defaultReturnValue()
Description copied from interface:Reference2IntFunction
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 interfaceReference2IntFunction<K>
- Returns:
- the current default return value.
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