Scala Library
scala.collection.immutable.Stream

object Empty
[source: scala/collection/immutable/Stream.scala]
object Empty
extends Stream[Nothing]
Method Summary
override def head : Nothing
The first element of this stream
override def isEmpty : Boolean
is this stream empty?
override def tail : Nothing
A stream consisting of the remaining elements of this stream after the first one.
def tailDefined : Boolean
Is the tail of this stream defined?
Methods inherited from Stream
companion, append, force, print, print, toStream, hasDefiniteSize, ++, ++, map, flatMap, filter, foreach, foldLeft, partition, zip, zipWithIndex, addString, mkString, mkString, mkString, toString, take, slice, init, takeRight, takeWhile, dropWhile, removeDuplicates, padTo, reverse, flatten, stringPrefix
Methods inherited from LinearSeqLike
thisCollection, toCollection, length, apply, iterator, forall, exists, count, find, foldRight, reduceLeft, reduceRight, last, drop, dropRight, span, sameElements, lengthCompare, isDefinedAt, segmentLength, indexWhere, lastIndexWhere
Methods inherited from SeqLike
size, prefixLength, indexWhere, findIndexOf, indexOf, indexOf, lastIndexOf, lastIndexOf, lastIndexWhere, reverseMap, reverseIterator, reversedElements, startsWith, startsWith, endsWith, indexOfSeq, indexOfSeq, lastIndexOfSeq, lastIndexOfSeq, contains, union, diff, intersect, patch, updated, +:, :+, sortWith, sortWith, sortBy, toSeq, indices, view, view, hashCode, equals, findLastIndexOf, equalsWith, containsSlice, projection
Methods inherited from PartialFunction
orElse, andThen
Methods inherited from Function1
compose
Methods inherited from IterableLike
elements, toIterable, copyToArray, zipAll, canEqual, first, firstOption
Methods inherited from GenericTraversableTemplate
newBuilder, genericBuilder, unzip, transpose
Methods inherited from TraversableLike
repr, nonEmpty, filterNot, partialMap, remove, groupBy, /:, :\, reduceLeftOption, reduceRightOption, sum, product, min, max, headOption, lastOption, splitAt, copyToBuffer, copyToArray, toArray, toList, toIndexedSeq, toSet, addString, addString, withFilter
Methods inherited from AnyRef
getClass, clone, notify, notifyAll, wait, wait, wait, finalize, ==, !=, eq, ne, synchronized
Methods inherited from Any
==, !=, isInstanceOf, asInstanceOf
Method Details
override def isEmpty : Boolean
is this stream empty?
Overrides
Stream.isEmpty
override def head : Nothing
The first element of this stream
Throws
Predef.NoSuchElementException - if the stream is empty.
Overrides
Stream.head
override def tail : Nothing
A stream consisting of the remaining elements of this stream after the first one.
Throws
Predef.UnsupportedOperationException - if the stream is empty.
Overrides
Stream.tail
def tailDefined : Boolean
Is the tail of this stream defined?
Overrides
Stream.tailDefined
Scala Library