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Scala Library Documentation
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scala/collection/jcl/Set.scala]
trait
Set[A]
extends Collection[A] with Set[A]| Method Summary | |
override def
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+
(t : A) : Set
Add a new element to the set.
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override def
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++
(i : Iterable[A]) : Set
Add all the elements provided by an iterator
of the iterable object
elems to the set. |
override def
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-
(t : A) : Set
Remove a new element from the set.
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override def
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--
(i : Iterable[A]) : Set
Remove all the elements provided by an iterator
of the iterable object
elems from the set. |
override abstract def
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add
(a : A) : Boolean
Add will return false if "a" already exists in the set.
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override def
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clear
: Unit
Removes all elements from the set. After this operation is completed,
the set will be empty.
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override final def
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contains
(a : A) : Boolean
Checks if this set contains element
elem. |
override def
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isEmpty
: Boolean
Checks if this set is empty.
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override def
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projection
: Projection
returns a facade that can be used to call non-strict
filter,
map, and flatMap methods that build projections
of the collection. |
override def
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retain
(f : (A) => Boolean) : Unit
Method
retain removes all elements from the set for
which the predicate |
override def
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subsetOf
(set : Set[A]) : Boolean
Checks if this set is a subset of set
that. |
override def
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transform
(f : (A) => A) : Boolean
Transforms each element of the collection in-place according to
f. |
| Methods inherited from Set | |
| update, +=, ++=, ++=, +, ++, incl, -=, --=, --=, -, --, excl, intersect, <<, clone, readOnly |
| Methods inherited from Set | |
| size (abstract), apply, equals, hashCode, toArray |
| Methods inherited from Function1 | |
| toString, compose, andThen |
| Methods inherited from Collection | |
| hasAll, addAll, -=, += |
| Methods inherited from MutableIterable | |
| elements (abstract), has, remove, removeAll, retainAll, size0 |
| Methods inherited from Collection | |
| stringPrefix |
| Methods inherited from Iterable | |
| concat, ++, map, flatMap, filter, takeWhile, dropWhile, take, drop, foreach, forall, exists, find, findIndexOf, indexOf, foldLeft, foldRight, /:, :\, reduceLeft, reduceRight, copyToBuffer, sameElements, toList, mkString, mkString, addString, addString, copyToArray, hasDefiniteSize |
| Methods inherited from AnyRef | |
| getClass, notify, notifyAll, wait, wait, wait, finalize, ==, !=, eq, ne, synchronized |
| Methods inherited from Any | |
| ==, !=, isInstanceOf, asInstanceOf |
| Class Summary | |
class
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Filter
(p : (A) => Boolean) extends Filter with Set[A]
Base implementation of a filtered collection
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trait
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Projection
extends Projection
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| Method Details |
elems to the set.elems - the iterable object containing the elements to be addedelems from the set.elems - An iterable object containing the elements to remove from the set.elem - the element to be addedelem - the element to be removedretain removes all elements from the set for
which the predicate p yields the value false.override
def
isEmpty : Boolean
true iff there is no element in the set.elem.elem - the element to check for membership.true iff elem is contained in this set.override
def
clear : Unit
that.that - another set.true iff the other set is a superset of this set.
todo: rename to isSubsetOff.f - true if the collection is actually updated.override
def
projection : Projection
filter,
map, and flatMap methods that build projections
of the collection.|
Scala Library Documentation
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