scala.collection.mutable
class ImmutableSetAdaptor

[source: `scala/collection/mutable/ImmutableSetAdaptor.scala`]

@serializable
`` `class` ImmutableSetAdaptor[A](`protected val` set : Set[A])
  `extends` Set[A]

  This class can be used as an adaptor to create mutable sets from immutable set implementations. Only method `empty` has to be redefined if the immutable set on which this mutable set is originally based is not empty. `empty` is supposed to return the representation of an empty set.

Author
  Matthias Zenger
Version
  1.0, 21/07/2003

Method Summary
`def` | += (elem : A) : Unit Add a new element to the set.
`def` | -= (elem : A) : Unit Removes a single element from a set.
`override def` | clear : Unit Removes all elements from the set. After this operation is completed, the set will be empty.
`def` | contains (elem : A) : Boolean Checks if this set contains element `elem`.
`def` | elements : Iterator[A] Creates a new iterator over all elements contained in this object.
`override def` | exists (p : (A) => Boolean) : Boolean Apply a predicate `p` to all elements of this iterable object and return true, iff there is at least one element for which `p` yields true.
`override def` | foreach (f : (A) => Unit) : Unit Apply a function `f` to all elements of this iterable object.
`override def` | isEmpty : Boolean Checks if this set is empty.
`def` | size : Int Returns the number of elements in this set.
`override def` | toList : List[A] Create a fresh list with all the elements of this iterable object.
`override def` | toString : String

Methods inherited from Set
update, +=, ++=, ++=, +, +, ++, ++, incl, -=, --=, --=, -, -, --, --, excl, intersect, retain, <<, clone, readOnly

Methods inherited from Set
apply, subsetOf, equals, hashCode, toArray

Methods inherited from Collection
stringPrefix

Methods inherited from Iterable
concat, ++, map, flatMap, filter, takeWhile, dropWhile, take, drop, forall, find, findIndexOf, indexOf, foldLeft, foldRight, /:, :\, reduceLeft, reduceRight, copyToBuffer, sameElements, mkString, mkString, addString, addString, copyToArray, projection, hasDefiniteSize

Methods inherited from Function1
compose, andThen

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

  Returns the number of elements in this set.

Returns
  number of set elements.

`override` `def` isEmpty : Boolean

  Checks if this set is empty.

Returns
  `true` iff there is no element in the set.

`` `def` contains(elem : A) : Boolean

  Checks if this set contains element `elem`.

Parameters
  `elem -` the element to check for membership.
Returns
  `true` iff `elem` is contained in this set.

`override` `def` foreach(f : (A) => Unit) : Unit

  Apply a function `f` to all elements of this iterable object.

Notes
  Will not terminate for infinite-sized collections.
Parameters
  `f -` a function that is applied to every element.

`override` `def` exists(p : (A) => Boolean) : Boolean

  Apply a predicate `p` to all elements of this iterable object and return true, iff there is at least one element for which `p` yields true.

Notes
  May not terminate for infinite-sized collections.
Parameters
  `p -` the predicate
Returns
  true, iff the predicate yields true for at least one element.

`override` `def` toList : List[A]

  Create a fresh list with all the elements of this iterable object.

Notes
  Will not terminate for infinite-sized collections.

`override` `def` toString : String

`` `def` elements : Iterator[A]

  Creates a new iterator over all elements contained in this object.

Returns
  the new iterator

`` `def` +=(elem : A) : Unit

  Add a new element to the set.

Parameters
  `elem -` the element to be added

Overrides
  Set.+=

`` `def` -=(elem : A) : Unit

  Removes a single element from a set.

Parameters
  `elem -` The element to be removed.

Overrides
  Set.-=

`override` `def` clear : Unit

  Removes all elements from the set. After this operation is completed, the set will be empty.

Overrides
  Set.clear