Packages

c

com.github.andyglow.tree.Util

ConcatIterator

class ConcatIterator[T] extends Iterator[T]

Basically a fast, efficient .flatten or mkString for nested iterators

For some reason, the default way of concatenation e.g.

val middle = first ++ lastChildIter ++ sep ++ remaining

Was throwing weird NullPointerExceptions I couldn't figure out =(

Also, ++ didn't seem to be sufficiently lazy, so it was forcing things earlier than it really needed to. It isn't documented anywhere how lazy it's meant to be, whereas ConcatIterator here is obviously lazy and won't even evaluate each iterator until you ask it to

Linear Supertypes
Iterator[T], TraversableOnce[T], GenTraversableOnce[T], AnyRef, Any
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. ConcatIterator
  2. Iterator
  3. TraversableOnce
  4. GenTraversableOnce
  5. AnyRef
  6. Any
Implicitly
  1. by MonadOps
  2. by any2stringadd
  3. by StringFormat
  4. by Ensuring
  5. by ArrowAssoc
  6. by alternateImplicit
  1. Hide All
  2. Show All
Visibility
  1. Public
  2. All

Instance Constructors

  1. new ConcatIterator(it0: Iterator[Iterator[T]], joiner: () ⇒ Iterator[T])

Type Members

  1. class GroupedIterator[B >: A] extends AbstractIterator[Seq[B]] with Iterator[Seq[B]]
    Definition Classes
    Iterator

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. def +(other: String): String
    Implicit
    This member is added by an implicit conversion from ConcatIterator[T] to any2stringadd[ConcatIterator[T]] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ++[B >: T](that: ⇒ GenTraversableOnce[B]): Iterator[B]
    Definition Classes
    Iterator
  5. def ->[B](y: B): (ConcatIterator[T], B)
    Implicit
    This member is added by an implicit conversion from ConcatIterator[T] to ArrowAssoc[ConcatIterator[T]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  6. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  7. def addString(b: StringBuilder): StringBuilder
    Definition Classes
    TraversableOnce
  8. def addString(b: StringBuilder, sep: String): StringBuilder
    Definition Classes
    TraversableOnce
  9. def addString(b: StringBuilder, start: String, sep: String, end: String): StringBuilder
    Definition Classes
    TraversableOnce
  10. def aggregate[B](z: ⇒ B)(seqop: (B, T) ⇒ B, combop: (B, B) ⇒ B): B
    Definition Classes
    TraversableOnce → GenTraversableOnce
  11. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  12. def buffered: BufferedIterator[T]
    Definition Classes
    Iterator
  13. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native() @IntrinsicCandidate()
  14. def collect[B](pf: PartialFunction[T, B]): Iterator[B]
    Definition Classes
    Iterator
    Annotations
    @migration
    Migration

    (Changed in version 2.8.0) collect has changed. The previous behavior can be reproduced with toSeq.

  15. def collectFirst[B](pf: PartialFunction[T, B]): Option[B]
    Definition Classes
    TraversableOnce
  16. def contains(elem: Any): Boolean
    Definition Classes
    Iterator
  17. def copyToArray[B >: T](xs: Array[B], start: Int, len: Int): Unit
    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce
  18. def copyToArray[B >: T](xs: Array[B]): Unit
    Definition Classes
    TraversableOnce → GenTraversableOnce
  19. def copyToArray[B >: T](xs: Array[B], start: Int): Unit
    Definition Classes
    TraversableOnce → GenTraversableOnce
  20. def copyToBuffer[B >: T](dest: Buffer[B]): Unit
    Definition Classes
    TraversableOnce
  21. def corresponds[B](that: GenTraversableOnce[B])(p: (T, B) ⇒ Boolean): Boolean
    Definition Classes
    Iterator
  22. def count(p: (T) ⇒ Boolean): Int
    Definition Classes
    TraversableOnce → GenTraversableOnce
  23. var count: Int
  24. def drop(n: Int): Iterator[T]
    Definition Classes
    Iterator
  25. def dropWhile(p: (T) ⇒ Boolean): Iterator[T]
    Definition Classes
    Iterator
  26. def duplicate: (Iterator[T], Iterator[T])
    Definition Classes
    Iterator
  27. def ensuring(cond: (ConcatIterator[T]) ⇒ Boolean, msg: ⇒ Any): ConcatIterator[T]
    Implicit
    This member is added by an implicit conversion from ConcatIterator[T] to Ensuring[ConcatIterator[T]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  28. def ensuring(cond: (ConcatIterator[T]) ⇒ Boolean): ConcatIterator[T]
    Implicit
    This member is added by an implicit conversion from ConcatIterator[T] to Ensuring[ConcatIterator[T]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  29. def ensuring(cond: Boolean, msg: ⇒ Any): ConcatIterator[T]
    Implicit
    This member is added by an implicit conversion from ConcatIterator[T] to Ensuring[ConcatIterator[T]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  30. def ensuring(cond: Boolean): ConcatIterator[T]
    Implicit
    This member is added by an implicit conversion from ConcatIterator[T] to Ensuring[ConcatIterator[T]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  31. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  32. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  33. def exists(p: (T) ⇒ Boolean): Boolean
    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce
  34. def filter(p: (T) ⇒ Boolean): Iterator[T]
    Definition Classes
    Iterator
  35. def filterNot(p: (T) ⇒ Boolean): Iterator[T]
    Definition Classes
    Iterator
  36. def find(p: (T) ⇒ Boolean): Option[T]
    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce
  37. def flatMap[B](f: (T) ⇒ GenTraversableOnce[B]): Iterator[B]
    Definition Classes
    Iterator
  38. def fold[A1 >: T](z: A1)(op: (A1, A1) ⇒ A1): A1
    Definition Classes
    TraversableOnce → GenTraversableOnce
  39. def foldLeft[B](z: B)(op: (B, T) ⇒ B): B
    Definition Classes
    TraversableOnce → GenTraversableOnce
  40. def foldRight[B](z: B)(op: (T, B) ⇒ B): B
    Definition Classes
    TraversableOnce → GenTraversableOnce
  41. def forall(p: (T) ⇒ Boolean): Boolean
    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce
  42. def foreach[U](f: (T) ⇒ U): Unit
    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce
  43. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @IntrinsicCandidate()
  44. def grouped[B >: T](size: Int): GroupedIterator[B]
    Definition Classes
    Iterator
  45. def hasDefiniteSize: Boolean
    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce
  46. def hasNext: Boolean
    Definition Classes
    ConcatIterator → Iterator
  47. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @IntrinsicCandidate()
  48. var head: Iterator[T]
  49. def indexOf[B >: T](elem: B, from: Int): Int
    Definition Classes
    Iterator
  50. def indexOf[B >: T](elem: B): Int
    Definition Classes
    Iterator
  51. def indexWhere(p: (T) ⇒ Boolean, from: Int): Int
    Definition Classes
    Iterator
  52. def indexWhere(p: (T) ⇒ Boolean): Int
    Definition Classes
    Iterator
  53. def isEmpty: Boolean
    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce
  54. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  55. def isTraversableAgain: Boolean
    Definition Classes
    Iterator → GenTraversableOnce
  56. def length: Int
    Definition Classes
    Iterator
  57. def map[B](f: (T) ⇒ B): Iterator[B]
    Definition Classes
    Iterator
  58. def max[B >: T](implicit cmp: Ordering[B]): T
    Definition Classes
    TraversableOnce → GenTraversableOnce
  59. def maxBy[B](f: (T) ⇒ B)(implicit cmp: Ordering[B]): T
    Definition Classes
    TraversableOnce → GenTraversableOnce
  60. def min[B >: T](implicit cmp: Ordering[B]): T
    Definition Classes
    TraversableOnce → GenTraversableOnce
  61. def minBy[B](f: (T) ⇒ B)(implicit cmp: Ordering[B]): T
    Definition Classes
    TraversableOnce → GenTraversableOnce
  62. def mkString: String
    Definition Classes
    TraversableOnce → GenTraversableOnce
  63. def mkString(sep: String): String
    Definition Classes
    TraversableOnce → GenTraversableOnce
  64. def mkString(start: String, sep: String, end: String): String
    Definition Classes
    TraversableOnce → GenTraversableOnce
  65. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  66. def next(): T
    Definition Classes
    ConcatIterator → Iterator
  67. def nonEmpty: Boolean
    Definition Classes
    TraversableOnce → GenTraversableOnce
  68. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @IntrinsicCandidate()
  69. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @IntrinsicCandidate()
  70. def padTo[A1 >: T](len: Int, elem: A1): Iterator[A1]
    Definition Classes
    Iterator
  71. def partition(p: (T) ⇒ Boolean): (Iterator[T], Iterator[T])
    Definition Classes
    Iterator
  72. def patch[B >: T](from: Int, patchElems: Iterator[B], replaced: Int): Iterator[B]
    Definition Classes
    Iterator
  73. def product[B >: T](implicit num: Numeric[B]): B
    Definition Classes
    TraversableOnce → GenTraversableOnce
  74. def reduce[A1 >: T](op: (A1, A1) ⇒ A1): A1
    Definition Classes
    TraversableOnce → GenTraversableOnce
  75. def reduceLeft[B >: T](op: (B, T) ⇒ B): B
    Definition Classes
    TraversableOnce
  76. def reduceLeftOption[B >: T](op: (B, T) ⇒ B): Option[B]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  77. def reduceOption[A1 >: T](op: (A1, A1) ⇒ A1): Option[A1]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  78. def reduceRight[B >: T](op: (T, B) ⇒ B): B
    Definition Classes
    TraversableOnce → GenTraversableOnce
  79. def reduceRightOption[B >: T](op: (T, B) ⇒ B): Option[B]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  80. def reversed: List[T]
    Attributes
    protected[this]
    Definition Classes
    TraversableOnce
  81. def sameElements(that: Iterator[_]): Boolean
    Definition Classes
    Iterator
  82. def scanLeft[B](z: B)(op: (B, T) ⇒ B): Iterator[B]
    Definition Classes
    Iterator
  83. def scanRight[B](z: B)(op: (T, B) ⇒ B): Iterator[B]
    Definition Classes
    Iterator
  84. def seq: Iterator[T]
    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce
  85. def size: Int
    Definition Classes
    TraversableOnce → GenTraversableOnce
  86. def sizeHintIfCheap: Int
    Attributes
    protected[collection]
    Definition Classes
    GenTraversableOnce
  87. def slice(from: Int, until: Int): Iterator[T]
    Definition Classes
    Iterator
  88. def sliceIterator(from: Int, until: Int): Iterator[T]
    Attributes
    protected
    Definition Classes
    Iterator
  89. def sliding[B >: T](size: Int, step: Int): GroupedIterator[B]
    Definition Classes
    Iterator
  90. def span(p: (T) ⇒ Boolean): (Iterator[T], Iterator[T])
    Definition Classes
    Iterator
  91. def sum[B >: T](implicit num: Numeric[B]): B
    Definition Classes
    TraversableOnce → GenTraversableOnce
  92. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  93. def take(n: Int): Iterator[T]
    Definition Classes
    Iterator
  94. def takeWhile(p: (T) ⇒ Boolean): Iterator[T]
    Definition Classes
    Iterator
  95. def to[Col[_]](implicit cbf: CanBuildFrom[Nothing, T, Col[T]]): Col[T]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  96. def toArray[B >: T](implicit arg0: ClassTag[B]): Array[B]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  97. def toBuffer[B >: T]: Buffer[B]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  98. def toIndexedSeq: IndexedSeq[T]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  99. def toIterable: Iterable[T]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  100. def toIterator: Iterator[T]
    Definition Classes
    Iterator → GenTraversableOnce
  101. def toList: List[T]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  102. def toMap[T, U](implicit ev: <:<[T, (T, U)]): Map[T, U]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  103. def toSeq: Seq[T]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  104. def toSet[B >: T]: Set[B]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  105. def toStream: Stream[T]
    Definition Classes
    Iterator → GenTraversableOnce
  106. def toString(): String
    Definition Classes
    Iterator → AnyRef → Any
  107. def toTraversable: Traversable[T]
    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce
  108. def toVector: Vector[T]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  109. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  110. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  111. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  112. def withFilter(p: (T) ⇒ Boolean): Iterator[T]
    Definition Classes
    Iterator
  113. def zip[B](that: Iterator[B]): Iterator[(T, B)]
    Definition Classes
    Iterator
  114. def zipAll[B, A1 >: T, B1 >: B](that: Iterator[B], thisElem: A1, thatElem: B1): Iterator[(A1, B1)]
    Definition Classes
    Iterator
  115. def zipWithIndex: Iterator[(T, Int)]
    Definition Classes
    Iterator
  116. def →[B](y: B): (ConcatIterator[T], B)
    Implicit
    This member is added by an implicit conversion from ConcatIterator[T] to ArrowAssoc[ConcatIterator[T]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Shadowed Implicit Value Members

  1. def filter(p: (T) ⇒ Boolean): TraversableOnce[T]
    Implicit
    This member is added by an implicit conversion from ConcatIterator[T] to MonadOps[T] performed by method MonadOps in scala.collection.TraversableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (concatIterator: MonadOps[T]).filter(p)
    Definition Classes
    MonadOps
  2. def flatMap[B](f: (T) ⇒ GenTraversableOnce[B]): TraversableOnce[B]
    Implicit
    This member is added by an implicit conversion from ConcatIterator[T] to MonadOps[T] performed by method MonadOps in scala.collection.TraversableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (concatIterator: MonadOps[T]).flatMap(f)
    Definition Classes
    MonadOps
  3. def map[B](f: (T) ⇒ B): TraversableOnce[B]
    Implicit
    This member is added by an implicit conversion from ConcatIterator[T] to MonadOps[T] performed by method MonadOps in scala.collection.TraversableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (concatIterator: MonadOps[T]).map(f)
    Definition Classes
    MonadOps
  4. def withFilter(p: (T) ⇒ Boolean): Iterator[T]
    Implicit
    This member is added by an implicit conversion from ConcatIterator[T] to MonadOps[T] performed by method MonadOps in scala.collection.TraversableOnce.
    Shadowing
    This implicitly inherited member is shadowed by one or more members in this class.
    To access this member you can use a type ascription:
    (concatIterator: MonadOps[T]).withFilter(p)
    Definition Classes
    MonadOps

Deprecated Value Members

  1. def /:[B](z: B)(op: (B, T) ⇒ B): B
    Definition Classes
    TraversableOnce → GenTraversableOnce
    Annotations
    @deprecated
    Deprecated

    (Since version 2.12.10) Use foldLeft instead of /:

  2. def :\[B](z: B)(op: (T, B) ⇒ B): B
    Definition Classes
    TraversableOnce → GenTraversableOnce
    Annotations
    @deprecated
    Deprecated

    (Since version 2.12.10) Use foldRight instead of :\

  3. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] ) @Deprecated
    Deprecated
  4. def formatted(fmtstr: String): String
    Implicit
    This member is added by an implicit conversion from ConcatIterator[T] to StringFormat[ConcatIterator[T]] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.12.16) Use formatString.format(value) instead of value.formatted(formatString), or use the f"" string interpolator. In Java 15 and later, formatted resolves to the new method in String which has reversed parameters.

Inherited from Iterator[T]

Inherited from TraversableOnce[T]

Inherited from GenTraversableOnce[T]

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion MonadOps from ConcatIterator[T] to MonadOps[T]

Inherited by implicit conversion any2stringadd from ConcatIterator[T] to any2stringadd[ConcatIterator[T]]

Inherited by implicit conversion StringFormat from ConcatIterator[T] to StringFormat[ConcatIterator[T]]

Inherited by implicit conversion Ensuring from ConcatIterator[T] to Ensuring[ConcatIterator[T]]

Inherited by implicit conversion ArrowAssoc from ConcatIterator[T] to ArrowAssoc[ConcatIterator[T]]

Inherited by implicit conversion alternateImplicit from ConcatIterator[T] to ForceImplicitAmbiguity

Ungrouped