object Empty in scala.collection.immutable.Stream

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, partition, zip, zipWithIndex, addString, take, slice, init, takeRight, takeWhile, dropWhile, removeDuplicates, padTo, reverse, stringPrefix

Methods inherited from LinearSequenceTemplate
length, apply, iterator, foreach, forall, exists, count, find, foldLeft, foldRight, reduceLeft, reduceRight, last, drop, dropRight, span, sameElements, lengthCompare, isDefinedAt, segmentLength, indexWhere, lastIndexWhere, equals

Methods inherited from Sequence
hashCode

Methods inherited from SequenceTemplate
size, zipAll, prefixLength, indexWhere, findIndexOf, indexOf, indexOf, lastIndexOf, lastIndexOf, lastIndexWhere, reverseIterator, reversedElements, startsWith, startsWith, endsWith, indexOfSeq, indexOfSeq, lastIndexOfSeq, lastIndexOfSeq, contains, union, diff, intersect, patch, toSequence, indices, view, view, toString, sortWith, findLastIndexOf, slice, equalsWith, containsSlice, projection

Methods inherited from PartialFunction
orElse, andThen

Methods inherited from Function1
compose

Methods inherited from IterableTemplate
elements, toIterable, first, firstOption, toSeq

Methods inherited from TraversableClass
newBuilder, genericBuilder, unzip, flatten, transpose

Methods inherited from TraversableTemplate
thisCollection, nonEmpty, filterMap, filterNot, remove, groupBy, /:, :\, reduceLeftOption, reduceRightOption, headOption, lastOption, splitAt, copyToBuffer, copyToArray, copyToArray, toArray, toList, toSet, mkString, mkString, mkString, addString, addString

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