Packages

object Array extends java.io.Serializable

Utility methods for operating on arrays. For example:

val a = Array(1, 2)
val b = Array.ofDim[Int](2)
val c = Array.concat(a, b)

where the array objects a, b and c have respectively the values Array(1, 2), Array(0, 0) and Array(1, 2, 0, 0).

Source
Array.scala
Since

1.0

Linear Supertypes
java.io.Serializable, AnyRef, Any
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  1. Array
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Visibility
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Type Members

  1. final class UnapplySeqWrapper[T] extends AnyVal

Value Members

  1. def apply(x: Unit, xs: Unit*): Array[Unit]

    Creates an array of Unit objects

  2. def apply(x: Double, xs: Double*): Array[Double]

    Creates an array of Double objects

  3. def apply(x: Float, xs: Float*): Array[Float]

    Creates an array of Float objects

  4. def apply(x: Long, xs: Long*): Array[Long]

    Creates an array of Long objects

  5. def apply(x: Int, xs: Int*): Array[Int]

    Creates an array of Int objects

  6. def apply(x: Char, xs: Char*): Array[Char]

    Creates an array of Char objects

  7. def apply(x: Short, xs: Short*): Array[Short]

    Creates an array of Short objects

  8. def apply(x: Byte, xs: Byte*): Array[Byte]

    Creates an array of Byte objects

  9. def apply(x: Boolean, xs: Boolean*): Array[Boolean]

    Creates an array of Boolean objects

  10. def apply[T](xs: T*)(implicit arg0: ClassTag[T]): Array[T]

    Creates an array with given elements.

    Creates an array with given elements.

    xs

    the elements to put in the array

    returns

    an array containing all elements from xs.

  11. def concat[T](xss: Array[T]*)(implicit arg0: ClassTag[T]): Array[T]

    Concatenates all arrays into a single array.

    Concatenates all arrays into a single array.

    xss

    the given arrays

    returns

    the array created from concatenating xss

  12. def copy(src: AnyRef, srcPos: Int, dest: AnyRef, destPos: Int, length: Int): Unit

    Copy one array to another.

    Copy one array to another. Equivalent to Java's System.arraycopy(src, srcPos, dest, destPos, length), except that this also works for polymorphic and boxed arrays.

    Note that the passed-in dest array will be modified by this call.

    src

    the source array.

    srcPos

    starting position in the source array.

    dest

    destination array.

    destPos

    starting position in the destination array.

    length

    the number of array elements to be copied.

    See also

    java.lang.System#arraycopy

  13. def copyAs[A](original: Array[_], newLength: Int)(implicit ct: ClassTag[A]): Array[A]

    Copy one array to another, truncating or padding with default values (if necessary) so the copy has the specified length.

    Copy one array to another, truncating or padding with default values (if necessary) so the copy has the specified length. The new array can have a different type than the original one as long as the values are assignment-compatible. When copying between primitive and object arrays, boxing and unboxing are supported.

    Equivalent to Java's java.util.Arrays.copyOf(original, newLength, newType), except that this works for all combinations of primitive and object arrays in a single method.

    See also

    java.util.Arrays#copyOf

  14. def copyOf[A](original: Array[A], newLength: Int): Array[A]

    Copy one array to another, truncating or padding with default values (if necessary) so the copy has the specified length.

    Copy one array to another, truncating or padding with default values (if necessary) so the copy has the specified length.

    Equivalent to Java's java.util.Arrays.copyOf(original, newLength), except that this works for primitive and object arrays in a single method.

    See also

    java.util.Arrays#copyOf

  15. def empty[T](implicit arg0: ClassTag[T]): Array[T]

    Returns an array of length 0

  16. val emptyBooleanArray: Array[Boolean]
  17. val emptyByteArray: Array[Byte]
  18. val emptyCharArray: Array[Char]
  19. val emptyDoubleArray: Array[Double]
  20. val emptyFloatArray: Array[Float]
  21. val emptyIntArray: Array[Int]
  22. val emptyLongArray: Array[Long]
  23. val emptyObjectArray: Array[AnyRef]
  24. val emptyShortArray: Array[Short]
  25. def equals(xs: Array[AnyRef], ys: Array[AnyRef]): Boolean
  26. def fill[T](n1: Int, n2: Int, n3: Int, n4: Int, n5: Int)(elem: => T)(implicit arg0: ClassTag[T]): Array[Array[Array[Array[Array[T]]]]]

    Returns a five-dimensional array that contains the results of some element computation a number of times.

    Returns a five-dimensional array that contains the results of some element computation a number of times.

    n1

    the number of elements in the 1st dimension

    n2

    the number of elements in the 2nd dimension

    n3

    the number of elements in the 3rd dimension

    n4

    the number of elements in the 4th dimension

    n5

    the number of elements in the 5th dimension

    elem

    the element computation

  27. def fill[T](n1: Int, n2: Int, n3: Int, n4: Int)(elem: => T)(implicit arg0: ClassTag[T]): Array[Array[Array[Array[T]]]]

    Returns a four-dimensional array that contains the results of some element computation a number of times.

    Returns a four-dimensional array that contains the results of some element computation a number of times.

    n1

    the number of elements in the 1st dimension

    n2

    the number of elements in the 2nd dimension

    n3

    the number of elements in the 3rd dimension

    n4

    the number of elements in the 4th dimension

    elem

    the element computation

  28. def fill[T](n1: Int, n2: Int, n3: Int)(elem: => T)(implicit arg0: ClassTag[T]): Array[Array[Array[T]]]

    Returns a three-dimensional array that contains the results of some element computation a number of times.

    Returns a three-dimensional array that contains the results of some element computation a number of times.

    n1

    the number of elements in the 1st dimension

    n2

    the number of elements in the 2nd dimension

    n3

    the number of elements in the 3rd dimension

    elem

    the element computation

  29. def fill[T](n1: Int, n2: Int)(elem: => T)(implicit arg0: ClassTag[T]): Array[Array[T]]

    Returns a two-dimensional array that contains the results of some element computation a number of times.

    Returns a two-dimensional array that contains the results of some element computation a number of times.

    n1

    the number of elements in the 1st dimension

    n2

    the number of elements in the 2nd dimension

    elem

    the element computation

  30. def fill[T](n: Int)(elem: => T)(implicit arg0: ClassTag[T]): Array[T]

    Returns an array that contains the results of some element computation a number of times.

    Returns an array that contains the results of some element computation a number of times.

    Note that this means that elem is computed a total of n times:

    scala> Array.fill(3){ math.random }
    res3: Array[Double] = Array(0.365461167592537, 1.550395944913685E-4, 0.7907242137333306)
    n

    the number of elements desired

    elem

    the element computation

    returns

    an Array of size n, where each element contains the result of computing elem.

  31. def from[A](it: IterableOnce[A])(implicit arg0: ClassTag[A]): Array[A]
  32. def iterate[T](start: T, len: Int)(f: (T) => T)(implicit arg0: ClassTag[T]): Array[T]

    Returns an array containing repeated applications of a function to a start value.

    Returns an array containing repeated applications of a function to a start value.

    start

    the start value of the array

    len

    the number of elements returned by the array

    f

    the function that is repeatedly applied

    returns

    the array returning len values in the sequence start, f(start), f(f(start)), ...

  33. def newBuilder[T](implicit t: ClassTag[T]): ArrayBuilder[T]

    Returns a new scala.collection.mutable.ArrayBuilder.

  34. def ofDim[T](n1: Int, n2: Int, n3: Int, n4: Int, n5: Int)(implicit arg0: ClassTag[T]): Array[Array[Array[Array[Array[T]]]]]

    Creates a 5-dimensional array

  35. def ofDim[T](n1: Int, n2: Int, n3: Int, n4: Int)(implicit arg0: ClassTag[T]): Array[Array[Array[Array[T]]]]

    Creates a 4-dimensional array

  36. def ofDim[T](n1: Int, n2: Int, n3: Int)(implicit arg0: ClassTag[T]): Array[Array[Array[T]]]

    Creates a 3-dimensional array

  37. def ofDim[T](n1: Int, n2: Int)(implicit arg0: ClassTag[T]): Array[Array[T]]

    Creates a 2-dimensional array

  38. def ofDim[T](n1: Int)(implicit arg0: ClassTag[T]): Array[T]

    Creates array with given dimensions

  39. def range(start: Int, end: Int, step: Int): Array[Int]

    Returns an array containing equally spaced values in some integer interval.

    Returns an array containing equally spaced values in some integer interval.

    start

    the start value of the array

    end

    the end value of the array, exclusive (in other words, this is the first value not returned)

    step

    the increment value of the array (may not be zero)

    returns

    the array with values in start, start + step, ... up to, but excluding end

  40. def range(start: Int, end: Int): Array[Int]

    Returns an array containing a sequence of increasing integers in a range.

    Returns an array containing a sequence of increasing integers in a range.

    start

    the start value of the array

    end

    the end value of the array, exclusive (in other words, this is the first value not returned)

    returns

    the array with values in range start, start + 1, ..., end - 1 up to, but excluding, end.

  41. def tabulate[T](n1: Int, n2: Int, n3: Int, n4: Int, n5: Int)(f: (Int, Int, Int, Int, Int) => T)(implicit arg0: ClassTag[T]): Array[Array[Array[Array[Array[T]]]]]

    Returns a five-dimensional array containing values of a given function over ranges of integer values starting from 0.

    Returns a five-dimensional array containing values of a given function over ranges of integer values starting from 0.

    n1

    the number of elements in the 1st dimension

    n2

    the number of elements in the 2nd dimension

    n3

    the number of elements in the 3rd dimension

    n4

    the number of elements in the 4th dimension

    n5

    the number of elements in the 5th dimension

    f

    The function computing element values

  42. def tabulate[T](n1: Int, n2: Int, n3: Int, n4: Int)(f: (Int, Int, Int, Int) => T)(implicit arg0: ClassTag[T]): Array[Array[Array[Array[T]]]]

    Returns a four-dimensional array containing values of a given function over ranges of integer values starting from 0.

    Returns a four-dimensional array containing values of a given function over ranges of integer values starting from 0.

    n1

    the number of elements in the 1st dimension

    n2

    the number of elements in the 2nd dimension

    n3

    the number of elements in the 3rd dimension

    n4

    the number of elements in the 4th dimension

    f

    The function computing element values

  43. def tabulate[T](n1: Int, n2: Int, n3: Int)(f: (Int, Int, Int) => T)(implicit arg0: ClassTag[T]): Array[Array[Array[T]]]

    Returns a three-dimensional array containing values of a given function over ranges of integer values starting from 0.

    Returns a three-dimensional array containing values of a given function over ranges of integer values starting from 0.

    n1

    the number of elements in the 1st dimension

    n2

    the number of elements in the 2nd dimension

    n3

    the number of elements in the 3rd dimension

    f

    The function computing element values

  44. def tabulate[T](n1: Int, n2: Int)(f: (Int, Int) => T)(implicit arg0: ClassTag[T]): Array[Array[T]]

    Returns a two-dimensional array containing values of a given function over ranges of integer values starting from 0.

    Returns a two-dimensional array containing values of a given function over ranges of integer values starting from 0.

    n1

    the number of elements in the 1st dimension

    n2

    the number of elements in the 2nd dimension

    f

    The function computing element values

  45. def tabulate[T](n: Int)(f: (Int) => T)(implicit arg0: ClassTag[T]): Array[T]

    Returns an array containing values of a given function over a range of integer values starting from 0.

    Returns an array containing values of a given function over a range of integer values starting from 0.

    n

    The number of elements in the array

    f

    The function computing element values

    returns

    A traversable consisting of elements f(0),f(1), ..., f(n - 1)

  46. implicit def toFactory[A](dummy: Array.type)(implicit arg0: ClassTag[A]): Factory[A, Array[A]]

    Provides an implicit conversion from the Array object to a collection Factory

  47. def unapplySeq[T](x: Array[T]): UnapplySeqWrapper[T]

    Called in a pattern match like { case Array(x,y,z) => println('3 elements')}.

    Called in a pattern match like { case Array(x,y,z) => println('3 elements')}.

    x

    the selector value

    returns

    sequence wrapped in a scala.Some, if x is an Array, otherwise None