Scala Library
scala.collection.mutable

trait SynchronizedMap
[source: scala/collection/mutable/SynchronizedMap.scala]
trait SynchronizedMap[A, B]
extends Map[A, B]
This class should be used as a mixin. It synchronizes the Map functions of the class into which it is mixed in.
Author
Matthias Zenger, Martin Odersky
Version
2.0, 31/12/2006
Method Summary
override def ++= (it : Iterator[(A, B)]) : Unit
Add a sequence of key/value pairs to this map.
override def ++= (map : Iterable[(A, B)]) : Unit
Add a sequence of key/value pairs to this map.
override def += (kv1 : (A, B), kv2 : (A, B), kvs : (A, B)*) : Unit
Add two or more key/value pairs to this map.
override def += (kv : (A, B)) : Unit
Add a key/value pair to this map.
override def --= (it : Iterator[A]) : Unit
Remove a sequence of keys from this map
override def --= (keys : Iterable[A]) : Unit
Remove a sequence of keys from this map
def -= (key : A) : Unit
Remove a key from this map, noop if key is not present.
override def -= (key1 : A, key2 : A, keys : A*) : Unit
Remove two or more keys from this map
override def << (cmd : Message[(A, B)]) : Unit
Send a message to this scriptable object.
override def apply (key : A) : B
Retrieve the value which is associated with the given key. This method throws an exception if there is no mapping from the given key to a value.
override def clear : Unit
Removes all mappings from the map. After this operation is completed, the map is empty.
override def clone : Map[A, B]
Return a clone of this map.
override def contains (key : A) : Boolean
Is the given key mapped to a value by this map?
def elements : Iterator[(A, B)]
Creates a new iterator over all elements contained in this object.
override def equals (that : Any) : Boolean
Compares two maps structurally; i.e. checks if all mappings contained in this map are also contained in the other map, and vice versa.
override def excl (keys : A*) : Unit
This method will remove all the mappings for the given sequence of keys from the map.
def get (key : A) : Option[B]
Check if this map maps key to a value and return the value if it exists.
override def getOrElseUpdate (key : A, default : => B) : B
Check if this map maps key to a value. Return that value if it exists, otherwise put default as that key's value and return it.
override def hashCode : Int
A hash method compatible with equals
override def incl (mappings : (A, B)*) : Unit
incl can be used to add many mappings at the same time to the map. The method assumes that a mapping is represented by a Pair object who's first component denotes the key, and who's second component refers to the value.
override def isDefinedAt (key : A) : Boolean
Does this map contain a mapping from the given key to a value?
override def isEmpty : Boolean
Is this an empty map?
override def keySet : Set[A]
override def keys : Iterator[A]
Creates an iterator for all keys.
override def retain (p : (A, B) => Boolean) : Unit
This method retains only those mappings for which the predicate p returns true.
def size : Int
Compute the number of key-to-value mappings.
override def toList : List[(A, B)]
Returns a list containing all of the elements in this iterable object.
override def toString : java.lang.String
Creates a string representation for this map.
override def transform (f : (A, B) => B) : Unit
This function transforms all the values of mappings contained in this map with function f.
def update (key : A, value : B) : Unit
This method allows one to add a new mapping from key to value to the map. If the map already contains a mapping for key, it will be overridden by this function.
override def values : Iterator[B]
Creates an iterator for a contained values.
Methods inherited from Map
+, +, ++, ++, -, removeKey, put, -, --, --, readOnly, +=
Methods inherited from Map
getOrElse, default, projection, filterKeys, mapElements, stringPrefix
Methods inherited from Collection
toArray
Methods inherited from Iterable
concat, ++, map, flatMap, filter, partition, takeWhile, dropWhile, take, drop, foreach, forall, exists, find, findIndexOf, indexOf, foldLeft, foldRight, /:, :\, reduceLeft, reduceRight, copyToBuffer, sameElements, 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, notify, notifyAll, wait, wait, wait, finalize, ==, !=, eq, ne, synchronized
Methods inherited from Any
==, !=, isInstanceOf, asInstanceOf
Method Details
def size : Int
Compute the number of key-to-value mappings.
Returns
the number of mappings
def get(key : A) : Option[B]
Check if this map maps key to a value and return the value if it exists.
Parameters
key - the key of the mapping of interest
Returns
the value of the mapping, if it exists
override def isEmpty : Boolean
Is this an empty map?
Returns
true iff the map is empty.
override def apply(key : A) : B
Retrieve the value which is associated with the given key. This method throws an exception if there is no mapping from the given key to a value.
Parameters
key - the key
Returns
the value associated with the given key.
override def contains(key : A) : Boolean
Is the given key mapped to a value by this map?
Parameters
key - the key
Returns
true iff there is a mapping for key in this map
override def isDefinedAt(key : A) : Boolean
Does this map contain a mapping from the given key to a value?
Parameters
key - the key
Returns
true iff there is a mapping for key in this map
override def keys : Iterator[A]
Creates an iterator for all keys.
Returns
an iterator over all keys.
override def keySet : Set[A]
Returns
the keys of this map as a set.
override def values : Iterator[B]
Creates an iterator for a contained values.
Returns
an iterator over all values.
def elements : Iterator[(A, B)]
Creates a new iterator over all elements contained in this object.
Returns
the new iterator
override def toList : List[(A, B)]
Returns a list containing all of the elements in this iterable object.
Notes
Will not terminate for infinite-sized collections.
def update(key : A, value : B) : Unit
This method allows one to add a new mapping from key to value to the map. If the map already contains a mapping for key, it will be overridden by this function.
Parameters
key - The key to update
value - The new value
Overrides
Map.update
override def +=(kv : (A, B)) : Unit
Add a key/value pair to this map.
Parameters
kv - the key/value pair.
Overrides
Map.+=
override def +=(kv1 : (A, B), kv2 : (A, B), kvs : (A, B)*) : Unit
Add two or more key/value pairs to this map.
Parameters
kv1 - the key/first value pair.
kv2 - the second key/first value pair.
kvs - the remaining key/first value pairs.
Overrides
Map.+=
override def ++=(map : Iterable[(A, B)]) : Unit
Add a sequence of key/value pairs to this map.
Parameters
kvs - the iterable object containing all key/value pairs.
Overrides
Map.++=
override def ++=(it : Iterator[(A, B)]) : Unit
Add a sequence of key/value pairs to this map.
Parameters
kvs - the iterator containing all key/value pairs.
Overrides
Map.++=
@deprecated

override def incl(mappings : (A, B)*) : Unit
incl can be used to add many mappings at the same time to the map. The method assumes that a mapping is represented by a Pair object who's first component denotes the key, and who's second component refers to the value.
Parameters
mappings -
Deprecated
use +=
Overrides
Map.incl
def -=(key : A) : Unit
Remove a key from this map, noop if key is not present.
Parameters
key - the key to be removed
Overrides
Map.-=
override def -=(key1 : A, key2 : A, keys : A*) : Unit
Remove two or more keys from this map
Parameters
key1 - the first key to be removed
key2 - the second key to be removed
keys - the remaining keys to be removed
Overrides
Map.-=
override def --=(keys : Iterable[A]) : Unit
Remove a sequence of keys from this map
Parameters
keys - the keys to be removed
Overrides
Map.--=
override def --=(it : Iterator[A]) : Unit
Remove a sequence of keys from this map
Parameters
keys - the keys to be removed
Overrides
Map.--=
@deprecated

override def excl(keys : A*) : Unit
This method will remove all the mappings for the given sequence of keys from the map.
Parameters
keys -
Deprecated
use -=
Overrides
Map.excl
override def clear : Unit
Removes all mappings from the map. After this operation is completed, the map is empty.
Overrides
Map.clear
override def getOrElseUpdate(key : A, default : => B) : B
Check if this map maps key to a value. Return that value if it exists, otherwise put default as that key's value and return it.
Overrides
Map.getOrElseUpdate
override def transform(f : (A, B) => B) : Unit
This function transforms all the values of mappings contained in this map with function f.
Parameters
f - The transformation to apply
Overrides
Map.transform
override def retain(p : (A, B) => Boolean) : Unit
This method retains only those mappings for which the predicate p returns true.
Parameters
p - The test predicate
Deprecated
cannot be type inferred because if retain in Iterable.
Overrides
Map.retain
override def toString : java.lang.String
Creates a string representation for this map.
Returns
a string showing all mappings
override def equals(that : Any) : Boolean
Compares two maps structurally; i.e. checks if all mappings contained in this map are also contained in the other map, and vice versa.
Parameters
that - the other map
Returns
true iff both maps contain exactly the same mappings.
override def hashCode : Int
A hash method compatible with equals
override def <<(cmd : Message[(A, B)]) : Unit
Send a message to this scriptable object.
Parameters
cmd - the message to send.
Overrides
Map.<<
override def clone : Map[A, B]
Return a clone of this map.
Returns
a map with the same elements.
Overrides
Map.clone
Scala Library