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java.lang.Objectit.unimi.dsi.fastutil.ints.AbstractInt2DoubleFunction
it.unimi.dsi.fastutil.ints.Int2DoubleFunctions.EmptyFunction
public static class Int2DoubleFunctions.EmptyFunction
An immutable class representing an empty type-specific function.
This class may be useful to implement your own in case you subclass a type-specific function.
Field Summary | |
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static long |
serialVersionUID
|
Method Summary | |
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void |
clear()
Removes all associations from this function (optional operation). |
java.lang.Object |
clone()
|
boolean |
containsKey(int k)
|
double |
defaultReturnValue()
Gets the default return value. |
void |
defaultReturnValue(double defRetValue)
Sets the default return value. |
double |
get(int k)
Returns the value to which the given key is mapped. |
java.lang.Double |
get(java.lang.Object k)
Delegates to the corresponding type-specific method, taking care of returning null on a missing key. |
int |
size()
Returns the intended number of keys in this function, or -1 if no such number exists. |
Methods inherited from class it.unimi.dsi.fastutil.ints.AbstractInt2DoubleFunction |
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containsKey, put, put, remove, remove |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final long serialVersionUID
Method Detail |
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public double get(int k)
Int2DoubleFunction
get
in interface Int2DoubleFunction
k
- the key.
Function.get(Object)
public boolean containsKey(int k)
containsKey
in interface Int2DoubleFunction
Function.containsKey(Object)
public double defaultReturnValue()
Int2DoubleFunction
defaultReturnValue
in interface Int2DoubleFunction
defaultReturnValue
in class AbstractInt2DoubleFunction
public void defaultReturnValue(double defRetValue)
Int2DoubleFunction
get()
, put()
and remove()
to
denote that the map does not contain the specified key. It must be
0/false
/null
by default.
defaultReturnValue
in interface Int2DoubleFunction
defaultReturnValue
in class AbstractInt2DoubleFunction
defRetValue
- the new default return value.Int2DoubleFunction.defaultReturnValue()
public java.lang.Double get(java.lang.Object k)
AbstractInt2DoubleFunction
null
on a missing key.
This method must check whether the provided key is in the map using containsKey()
. Thus,
it probes the map twice. Implementors of subclasses should override it with a more efficient method.
get
in interface Function<java.lang.Integer,java.lang.Double>
get
in class AbstractInt2DoubleFunction
k
- the key.
null
if no value was present for the given key.Map.get(Object)
public int size()
Function
Most function implementations will have some knowledge of the intended number of keys in their domain. In some cases, however, this might not be possible.
size
in interface Function<java.lang.Integer,java.lang.Double>
public void clear()
Function
clear
in interface Function<java.lang.Integer,java.lang.Double>
clear
in class AbstractInt2DoubleFunction
Map.clear()
public java.lang.Object clone()
clone
in class java.lang.Object
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