Scala Library
scala.collection.mutable

class History
[source: scala/collection/mutable/History.scala]
@serializable

class History[A, B]
extends Subscriber[A, B] with Iterable[(B, A)]
History[A, B] objects may subscribe to events of type A published by an object of type B. The history subscriber object records all published events up to maximum number of maxHistory events.
Author
Matthias Zenger
Version
1.0, 08/07/2003
Direct Known Subclasses:
RevertableHistory
Value Summary
protected val log : Queue[(B, A)]
val maxHistory : Int
Method Summary
def clear : Unit
def events : Iterator[A]
def iterator : Iterator[(B, A)]
Creates a new iterator over all elements contained in this iterable object.
def notify (pub : B, event : A) : Unit
override def size : Int
The number of elements in this collection
Methods inherited from Iterable
companion
Methods inherited from IterableTemplate
elements, foreach, isEmpty, foldRight, reduceRight, toIterable, head, takeRight, dropRight, sameElements, toStream, view, view, first, firstOption, toSeq, projection
Methods inherited from TraversableClass
newBuilder, genericBuilder, unzip, flatten, transpose
Methods inherited from TraversableTemplate
thisCollection, nonEmpty, hasDefiniteSize, ++, ++, map, flatMap, filter, filterMap, filterNot, remove, partition, groupBy, forall, exists, count, find, foldLeft, /:, :\, reduceLeft, reduceLeftOption, reduceRightOption, headOption, tail, last, lastOption, init, take, drop, slice, takeWhile, dropWhile, span, splitAt, copyToBuffer, copyToArray, copyToArray, toArray, toList, toSequence, toSet, mkString, mkString, mkString, addString, addString, addString, toString, stringPrefix
Methods inherited from AnyRef
getClass, hashCode, equals, clone, notify, notifyAll, wait, wait, wait, finalize, ==, !=, eq, ne, synchronized
Methods inherited from Any
==, !=, isInstanceOf, asInstanceOf
Value Details
protected val log : Queue[(B, A)]
val maxHistory : Int
Method Details
def notify(pub : B, event : A) : Unit
Parameters
pub - ...
event - ...
Overrides
Subscriber.notify
override def size : Int
The number of elements in this collection
def iterator : Iterator[(B, A)]
Creates a new iterator over all elements contained in this iterable object.
Returns
the new iterator
def events : Iterator[A]
def clear : Unit
Scala Library