Scala Library
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scala/collection/immutable/ListMap.scala
]
class
ListMap[A, +B]
extends
Map[A, B]ListMap
represent
empty maps; they can be either created by calling the constructor
directly, or by applying the function ListMap.empty
.Method Summary | |
def
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-
(key : A) : 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. |
def
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elements
: Iterator[(A, B)]
Returns an iterator over key-value pairs.
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def
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empty
[C] : ListMap[A, C]
Returns a
new ListMap instance mapping keys of the
same type to values of type C . |
def
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get
(key : A) : Option[B]
Checks if this map maps
key to a value and return the
value if it exists. |
protected def
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key : A |
protected def
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next : ListMap[A, B] |
def
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size
: Int
Returns the number of mappings in this map.
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def
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update
[B1 >: B](key : A, value : B1) : ListMap[A, B1]
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. |
protected def
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value : B |
Methods inherited from Map | |
+, +, ++, ++, -, --, --, withDefault, withDefaultValue, transform, filter, +, incl, incl, excl, excl, mappingToString |
Methods inherited from Map | |
getOrElse, isEmpty, apply, contains, isDefinedAt, keys, keySet, values, equals, hashCode, toString, default, projection, filterKeys, mapElements, stringPrefix |
Methods inherited from Collection | |
toArray |
Methods inherited from Iterable | |
concat, ++, map, flatMap, partition, takeWhile, dropWhile, take, drop, foreach, forall, exists, find, findIndexOf, indexOf, foldLeft, foldRight, /:, :\, reduceLeft, reduceRight, copyToBuffer, sameElements, toList, toSeq, toStream, mkString, mkString, mkString, addString, addString, addString, copyToArray, hasDefiniteSize |
Methods inherited from PartialFunction | |
orElse, andThen |
Methods inherited from Function1 | |
compose |
Methods inherited from AnyRef | |
getClass, clone, notify, notifyAll, wait, wait, wait, finalize, ==, !=, eq, ne, synchronized |
Methods inherited from Any | |
==, !=, isInstanceOf, asInstanceOf |
Class Summary | |
protected class
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Node
[B1 >: B](protected val override key : A, protected val override value : B1) extends ListMap[A, B1]
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Method Details |
new ListMap
instance mapping keys of the
same type to values of type C
.
def
size : Int
key
to a value and return the
value if it exists.key -
the key of the mapping of interestkey
to value
. If the map contains already a
mapping for key
, it will be overridden by this
function.key -
the key element of the updated entry.value -
the value element of the updated entry.key
.
If the map does not contain a mapping for the given key, the
method returns the same map.key -
a map without a mapping for the given key.protected
def
key : A
protected
def
value : B
Scala Library
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