Package it.unimi.dsi.fastutil.doubles
Class AbstractDouble2IntFunction
- java.lang.Object
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- it.unimi.dsi.fastutil.doubles.AbstractDouble2IntFunction
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- All Implemented Interfaces:
Double2IntFunction
,Function<Double,Integer>
,Serializable
,DoubleToIntFunction
,Function<Double,Integer>
- Direct Known Subclasses:
AbstractDouble2IntMap
,Double2IntFunctions.EmptyFunction
,Double2IntFunctions.Singleton
,Double2IntFunctions.UnmodifiableFunction
public abstract class AbstractDouble2IntFunction extends Object implements Double2IntFunction, 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.doubles.Double2IntFunction
andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, applyAsInt, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort, containsKey, containsKey, get, get, put, put, remove, remove
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Method Detail
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defaultReturnValue
public void defaultReturnValue(int rv)
Description copied from interface:Double2IntFunction
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 interfaceDouble2IntFunction
- Parameters:
rv
- the new default return value.- See Also:
Double2IntFunction.defaultReturnValue()
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defaultReturnValue
public int defaultReturnValue()
Description copied from interface:Double2IntFunction
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 interfaceDouble2IntFunction
- Returns:
- the current default return value.
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