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Scala 2
v2.1.3 |
class
ListMap
[ A , B ]
extends
java.lang.Object with
scala.collection.immutable.Map[A,B] with
scala.ScalaObjectListMap
represent
empty maps; they can be either created by calling the constructor
directly, or by applying the function ListMap.Empty
.Constructor Summary | |
def
this
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Class Summary | |
protected
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class
Node
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Def Summary | |
def
-
( key : A )
: scala.collection.immutable.ListMap[A,B]
This creates a new mapping without the given key .
If the map does not contain a mapping for the given key, the
method returns the same map.
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def
elements
: scala.Iterator[scala.Tuple2[A,B]]
This returns an iterator over key-value pairs. |
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def
empty
[ C ]
: scala.collection.immutable.ListMap[A,C]
This method returns a new ListMap instance mapping keys of the same type to values of type C .
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override
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def
equals
( obj : scala.Any )
: scala.Boolean
Compares two maps for equality. Two maps are equal iff they contain exactly the same key-value pairs. |
def
get
( key : A )
: scala.Option[B]
Check if this map maps key to a value and return the
value if it exists.
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override
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def
hashCode
: scala.Int
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def
size
: scala.Int
Returns the number of mappings in this map. |
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override
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def
toList
: scala.List[scala.Tuple2[A,B]]
This return a list of key-value pairs. |
def
update
( key : A , value : B )
: scala.collection.immutable.ListMap[A,B]
This method allows one to create a new map with an additional mapping from key
to value . If the map contains already a
mapping for key , it will be overridden by this
function.
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Constructor Detail |
def
this
Def Detail |
def
-
( key : A ) : scala.collection.immutable.ListMap[A,B]
key
.
If the map does not contain a mapping for the given key, the
method returns the same map.def
elements
: scala.Iterator[scala.Tuple2[A,B]]
def
empty
[ C ] : scala.collection.immutable.ListMap[A,C]
C
.def
equals
( obj : scala.Any ) : scala.Boolean
def
get
( key : A ) : scala.Option[B]
key
to a value and return the
value if it exists.def
hashCode
: scala.Int
def
size
: scala.Int
def
toList
: scala.List[scala.Tuple2[A,B]]
def
update
( key : A , value : B ) : scala.collection.immutable.ListMap[A,B]
key
to value
. If the map contains already a
mapping for key
, it will be overridden by this
function.