fs2-core/fs2/Chunk$/Queue

Queue

final class Queue[+O] extends Chunk[O]
A FIFO queue of chunks that provides an O(1) size method and provides the ability to
take and drop individual elements while preserving the chunk structure as much as possible.
This is similar to a queue of individual elements but chunk structure is maintained.
Companion
object
class Chunk[O]
trait ChunkPlatform[O]
trait Serializable
class Object
trait Matchable
class Any

Value members

Methods

override def iterator: Iterator[O]
Definition Classes
override def ++[O2 >: O](that: Chunk[O2]): Chunk[O2]
Definition Classes
def +:[O2 >: O](c: Chunk[O2]): Queue[O2]
Prepends a chunk to the start of this chunk queue.
def :+[O2 >: O](c: Chunk[O2]): Queue[O2]
Appends a chunk to the end of this chunk queue.
def apply(i: Int): O
def copyToArray[O2 >: O](xs: Array[O2], start: Int): Unit
override def take(n: Int): Queue[O]
Definition Classes
override def drop(n: Int): Queue[O]
Definition Classes
override def startsWith[O2 >: O](seq: Seq[O2]): Boolean
Definition Classes

Fields

val chunks: Queue[Chunk[O]]
val size: Int

Inherited methods

def foreach(f: O => Unit): Unit
Invokes the supplied function for each element of this chunk.
Inhertied from
Chunk
def flatMap[O2](f: O => Chunk[O2]): Chunk[O2]
Maps f over the elements of this chunk and concatenates the result.
Inhertied from
Chunk
def filter(p: O => Boolean): Chunk[O]
Returns a chunk that has only the elements that satisfy the supplied predicate.
Inhertied from
Chunk
def toChain: Chain[O]
Converts this chunk to a chain.
Inhertied from
Chunk
def find(p: O => Boolean): Option[O]
Returns the first element for which the predicate returns true or None if no elements satisfy the predicate.
Inhertied from
Chunk
def toArraySeq[O2 >: O](evidence$1: ClassTag[O2]): ArraySeq[O2]
Inhertied from
ChunkPlatform
def compact[O2 >: O](ct: ClassTag[O2]): ArraySlice[O2]
Converts this chunk to a chunk backed by a single array.
Inhertied from
Chunk
def zip[O2](that: Chunk[O2]): Chunk[(O, O2)]
Zips this chunk the the supplied chunk, returning a chunk of tuples.
Inhertied from
Chunk
def splitAt(n: Int): (Chunk[O], Chunk[O])
Splits this chunk in to two chunks at the specified index.
Inhertied from
Chunk
def foldLeft[A](init: A)(f: (A, O) => A): A
Left-folds the elements of this chunk.
Inhertied from
Chunk
def dropRight(n: Int): Chunk[O]
Drops the right-most n elements of this chunk queue in a way that preserves chunk structure.
Inhertied from
Chunk
def toArraySlice[O2 >: O](ct: ClassTag[O2]): ArraySlice[O2]
Inhertied from
Chunk
def toIArraySlice[O2 >: O](ct: ClassTag[O2]): IArraySlice[O2]
Inhertied from
ChunkPlatform
def traverse[F <: ([_$1] =>> Any), O2](f: O => F[O2])(F: Applicative[F]): F[Chunk[O2]]
Inhertied from
Chunk
def toArray[O2 >: O](evidence$1: ClassTag[O2]): Array[O2]
Copies the elements of this chunk to an array.
Inhertied from
Chunk
def toNel: Option[NonEmptyList[O]]
Converts this chunk to a NonEmptyList
Inhertied from
Chunk
def scanLeft[O2](z: O2)(f: (O2, O) => O2): Chunk[O2]
Like foldLeft but emits each intermediate result of f.
Inhertied from
Chunk
def map[O2](f: O => O2): Chunk[O2]
Creates a new chunk by applying f to each element in this chunk.
Inhertied from
Chunk
def mapAccumulate[S, O2](init: S)(f: (S, O) => (S, O2)): (S, Chunk[O2])
Maps the supplied stateful function over each element, outputting the final state and the accumulated outputs.
The first invocation of f uses init as the input state value. Each successive invocation uses
the output state of the previous invocation.
Inhertied from
Chunk
def toList: List[O]
Converts this chunk to a list.
Inhertied from
Chunk
def toVector: Vector[O]
Converts this chunk to a vector.
Inhertied from
Chunk
def zipWithIndex: Chunk[(O, Int)]
Zips the elements of the input chunk with its indices, and returns the new chunk.
Example
{{{
scala> Chunk("The", "quick", "brown", "fox").zipWithIndex.toList
res0: List[(String, Int)] = List((The,0), (quick,1), (brown,2), (fox,3))
}}}
Inhertied from
Chunk
def collect[O2](pf: PartialFunction[O, O2]): Chunk[O2]
More efficient version of filter(pf.isDefinedAt).map(pf).
Inhertied from
Chunk
override def toString: String
Definition Classes
Chunk -> Any
Inhertied from
Chunk
def toByteVector[B >: O](ev: B =:= Byte): ByteVector
Converts this chunk to a scodec-bits ByteVector.
Inhertied from
Chunk
final def isEmpty: Boolean
True if size is zero, false otherwise.
Inhertied from
Chunk
def toBitVector[B >: O](ev: B =:= Byte): BitVector
Converts this chunk to a scodec-bits BitVector.
Inhertied from
Chunk
def traverseFilter[F <: ([_$9] =>> Any), O2](f: O => F[Option[O2]])(F: Applicative[F]): F[Chunk[O2]]
Inhertied from
Chunk
def mapFilter[O2](f: O => Option[O2]): Chunk[O2]
Maps the supplied function over each element and returns a chunk of just the defined results.
Inhertied from
Chunk
def scanLeftCarry[O2](z: O2)(f: (O2, O) => O2): (Chunk[O2], O2)
Like scanLeft except the final element is emitted as a standalone value instead of as
the last element of the accumulated chunk.
Equivalent to val b = a.scanLeft(z)(f); val (c, carry) = b.splitAt(b.size - 1).
Inhertied from
Chunk
def last: Option[O]
Gets the last element of this chunk.
Inhertied from
Chunk
def toByteBuffer[B >: O](ev: B =:= Byte): ByteBuffer
Converts this chunk to a java.nio.ByteBuffer.
Inhertied from
Chunk
def indexWhere(p: O => Boolean): Option[Int]
Returns the index of the first element which passes the specified predicate (i.e., p(i) == true)
or None if no elements pass the predicate.
Inhertied from
Chunk
def reverseIterator: Iterator[O]
Creates an iterator that iterates the elements of this chunk in reverse order. The returned iterator is not thread safe.
Inhertied from
Chunk
override def hashCode: Int
Definition Classes
Chunk -> Any
Inhertied from
Chunk
def forall(p: O => Boolean): Boolean
Returns true if the predicate passes for all elements.
Inhertied from
Chunk
final def nonEmpty: Boolean
False if size is zero, true otherwise.
Inhertied from
Chunk
def toIArray[O2 >: O](evidence$2: ClassTag[O2]): IArray[O2]
Inhertied from
ChunkPlatform
def toArraySeqUntagged: ArraySeq[O]
Inhertied from
ChunkPlatform
def zipWith[O2, O3](that: Chunk[O2])(f: (O, O2) => O3): Chunk[O3]
Zips this chunk with the supplied chunk, passing each pair to f, resulting in
an output chunk.
Inhertied from
Chunk
override def equals(a: Any): Boolean
Definition Classes
Chunk -> Any
Inhertied from
Chunk
def takeRight(n: Int): Chunk[O]
Takes the right-most n elements of this chunk queue in a way that preserves chunk structure.
Inhertied from
Chunk