Package it.unimi.dsi.fastutil.longs
Class Long2DoubleFunctions.UnmodifiableFunction
- java.lang.Object
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- it.unimi.dsi.fastutil.longs.AbstractLong2DoubleFunction
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- it.unimi.dsi.fastutil.longs.Long2DoubleFunctions.UnmodifiableFunction
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- All Implemented Interfaces:
Function<Long,Double>
,Long2DoubleFunction
,Serializable
,Function<Long,Double>
,LongToDoubleFunction
- Direct Known Subclasses:
Long2DoubleMaps.UnmodifiableMap
- Enclosing class:
- Long2DoubleFunctions
public static class Long2DoubleFunctions.UnmodifiableFunction extends AbstractLong2DoubleFunction implements Serializable
An unmodifiable wrapper class for functions.- See Also:
- Serialized Form
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Method Summary
All Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description void
clear()
Removes all associations from this function (optional operation).boolean
containsKey(long k)
Returns true if this function contains a mapping for the specified key.double
defaultReturnValue()
Gets the default return value.void
defaultReturnValue(double defRetValue)
Sets the default return value (optional operation).boolean
equals(Object o)
double
get(long k)
Returns the value to which the given key is mapped.Double
get(Object k)
Deprecated.Please use the corresponding type-specific method instead.int
hashCode()
double
put(long k, double v)
Adds a pair to the map (optional operation).Double
put(Long k, Double v)
Deprecated.Please use the corresponding type-specific method instead.double
remove(long k)
Removes the mapping with the given key (optional operation).Double
remove(Object k)
Deprecated.Please use the corresponding type-specific method instead.int
size()
Returns the intended number of keys in this function, or -1 if no such number exists.String
toString()
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Methods inherited from interface it.unimi.dsi.fastutil.longs.Long2DoubleFunction
applyAsDouble, containsKey
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Method Detail
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size
public int size()
Description copied from interface:Function
Returns the intended number of keys in this function, or -1 if no such number exists.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. This default implementation, in particular, returns -1.
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defaultReturnValue
public double defaultReturnValue()
Description copied from interface:Long2DoubleFunction
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 interfaceLong2DoubleFunction
- Overrides:
defaultReturnValue
in classAbstractLong2DoubleFunction
- Returns:
- the current default return value.
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defaultReturnValue
public void defaultReturnValue(double defRetValue)
Description copied from interface:Long2DoubleFunction
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 interfaceLong2DoubleFunction
- Overrides:
defaultReturnValue
in classAbstractLong2DoubleFunction
- Parameters:
defRetValue
- the new default return value.- See Also:
Long2DoubleFunction.defaultReturnValue()
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containsKey
public boolean containsKey(long k)
Description copied from interface:Long2DoubleFunction
Returns true if this function contains a mapping for the specified key.Note that for some kind of functions (e.g., hashes) this method will always return true. In particular, this default implementation always returns true.
- Specified by:
containsKey
in interfaceLong2DoubleFunction
- Parameters:
k
- the key.- Returns:
- true if this function associates a value to
key
. - See Also:
Function.containsKey(Object)
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put
public double put(long k, double v)
Description copied from interface:Long2DoubleFunction
Adds a pair to the map (optional operation).- Specified by:
put
in interfaceLong2DoubleFunction
- Parameters:
k
- the key.v
- the value.- Returns:
- the old value, or the default return value if no value was present for the given key.
- See Also:
Function.put(Object,Object)
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get
public double get(long k)
Description copied from interface:Long2DoubleFunction
Returns the value to which the given key is mapped.- Specified by:
get
in interfaceLong2DoubleFunction
- Parameters:
k
- the key.- Returns:
- the corresponding value, or the default return value if no value was present for the given key.
- See Also:
Function.get(Object)
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remove
public double remove(long k)
Description copied from interface:Long2DoubleFunction
Removes the mapping with the given key (optional operation).- Specified by:
remove
in interfaceLong2DoubleFunction
- Parameters:
k
- the key.- Returns:
- the old value, or the default return value if no value was present for the given key.
- See Also:
Function.remove(Object)
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clear
public void clear()
Description copied from interface:Function
Removes all associations from this function (optional operation).- Specified by:
clear
in interfaceFunction<Long,Double>
- See Also:
Map.clear()
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put
@Deprecated public Double put(Long k, Double v)
Deprecated.Please use the corresponding type-specific method instead.Associates the specified value with the specified key in this function (optional operation).- Specified by:
put
in interfaceFunction<Long,Double>
- Specified by:
put
in interfaceLong2DoubleFunction
- Parameters:
k
- the key.v
- the value.- Returns:
- the old value, or
null
if no value was present for the given key. - See Also:
Map.put(Object,Object)
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get
@Deprecated public Double get(Object k)
Deprecated.Please use the corresponding type-specific method instead.Returns the value associated by this function to the specified key.- Specified by:
get
in interfaceFunction<Long,Double>
- Specified by:
get
in interfaceLong2DoubleFunction
- Parameters:
k
- the key.- Returns:
- the corresponding value, or
null
if no value was present for the given key. - See Also:
Map.get(Object)
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remove
@Deprecated public Double remove(Object k)
Deprecated.Please use the corresponding type-specific method instead.Removes this key and the associated value from this function if it is present (optional operation).- Specified by:
remove
in interfaceFunction<Long,Double>
- Specified by:
remove
in interfaceLong2DoubleFunction
- Parameters:
k
- the key.- Returns:
- the old value, or
null
if no value was present for the given key. - See Also:
Map.remove(Object)
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