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).
Attributes
- Companion
- class
- Source
- Array.scala
- Graph
-
- Supertypes
- Self type
-
Array.type
Members list
Type members
Classlikes
Attributes
- Source
- Array.scala
- Supertypes
Value members
Concrete methods
Creates an array with given elements.
Creates an array with given elements.
Value parameters
- xs
-
the elements to put in the array
Attributes
- Returns
-
an array containing all elements from xs.
- Source
- Array.scala
Creates an array of Boolean objects.
Creates an array of Boolean objects.
Value parameters
- x
-
the first element
- xs
-
the remaining elements
Attributes
- Source
- Array.scala
Creates an array of Byte objects.
Creates an array of Byte objects.
Value parameters
- x
-
the first element
- xs
-
the remaining elements
Attributes
- Source
- Array.scala
Creates an array of Short objects.
Creates an array of Short objects.
Value parameters
- x
-
the first element
- xs
-
the remaining elements
Attributes
- Source
- Array.scala
Creates an array of Char objects.
Creates an array of Char objects.
Value parameters
- x
-
the first element
- xs
-
the remaining elements
Attributes
- Source
- Array.scala
Creates an array of Int objects.
Creates an array of Int objects.
Value parameters
- x
-
the first element
- xs
-
the remaining elements
Attributes
- Source
- Array.scala
Creates an array of Long objects.
Creates an array of Long objects.
Value parameters
- x
-
the first element
- xs
-
the remaining elements
Attributes
- Source
- Array.scala
Creates an array of Float objects.
Creates an array of Float objects.
Value parameters
- x
-
the first element
- xs
-
the remaining elements
Attributes
- Source
- Array.scala
Creates an array of Double objects.
Creates an array of Double objects.
Value parameters
- x
-
the first element
- xs
-
the remaining elements
Attributes
- Source
- Array.scala
Creates an array of Unit objects.
Creates an array of Unit objects.
Value parameters
- x
-
the first element
- xs
-
the remaining elements
Attributes
- Source
- Array.scala
Concatenates all arrays into a single array.
Concatenates all arrays into a single array.
Type parameters
- T
-
the element type of the arrays
Value parameters
- xss
-
the given arrays
Attributes
- Returns
-
the array created from concatenating
xss - Source
- Array.scala
Copies 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.
Copies 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.
Value parameters
- dest
-
destination array.
- destPos
-
starting position in the destination array.
- length
-
the number of array elements to be copied.
- src
-
the source array.
- srcPos
-
starting position in the source array.
Attributes
- See also
-
java.lang.System#arraycopy - Source
- Array.scala
Copies 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.
Copies 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.
Type parameters
- A
-
the element type of the target array
Value parameters
- ct
-
the
ClassTagproviding runtime type information for the target element typeA - newLength
-
the length of the copy to be returned
- original
-
the array to be copied
Attributes
- Returns
-
a copy of the original array, with elements converted to type
A, truncated or padded to the specified length - See also
-
java.util.Arrays#copyOf - Source
- Array.scala
Copies one array to another, truncating or padding with default values (if necessary) so the copy has the specified length.
Copies 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.
Type parameters
- A
-
the element type of the array
Value parameters
- newLength
-
the length of the copy to be returned
- original
-
the array to be copied
Attributes
- Returns
-
a copy of the original array, truncated or padded with default values to obtain the specified length
- See also
-
java.util.Arrays#copyOf - Source
- Array.scala
Returns an array of length 0.
Returns an array of length 0.
Type parameters
- T
-
the element type of the array
Attributes
- Source
- Array.scala
Compares two arrays per element.
Compares two arrays per element.
A more efficient version of xs.sameElements(ys).
Note that arrays are invariant in Scala, but it may be sound to cast an array of arbitrary reference type to Array[AnyRef]. Arrays on the JVM are covariant in their element type.
Array.equals(xs.asInstanceOf[Array[AnyRef]], ys.asInstanceOf[Array[AnyRef]])
Value parameters
- xs
-
an array of AnyRef
- ys
-
an array of AnyRef
Attributes
- Returns
-
true if corresponding elements are equal
- Source
- Array.scala
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)
Type parameters
- T
-
the element type of the array
Value parameters
- elem
-
the element computation
- n
-
the number of elements desired
Attributes
- Returns
-
an Array of size n, where each element contains the result of computing
elem. - Source
- Array.scala
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.
Type parameters
- T
-
the element type of the array
Value parameters
- elem
-
the element computation
- n1
-
the number of elements in the 1st dimension
- n2
-
the number of elements in the 2nd dimension
Attributes
- Source
- Array.scala
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.
Type parameters
- T
-
the element type of the array
Value parameters
- elem
-
the element computation
- 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
Attributes
- Source
- Array.scala
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.
Type parameters
- T
-
the element type of the array
Value parameters
- elem
-
the element computation
- 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
Attributes
- Source
- Array.scala
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.
Type parameters
- T
-
the element type of the array
Value parameters
- elem
-
the element computation
- 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
Attributes
- Source
- Array.scala
Builds an array from the iterable collection.
Builds an array from the iterable collection.
scala> val a = Array.from(Seq(1, 5))
val a: Array[Int] = Array(1, 5)
scala> val b = Array.from(Range(1, 5))
val b: Array[Int] = Array(1, 2, 3, 4)
Type parameters
- A
-
the element type of the array
Value parameters
- it
-
the iterable collection
Attributes
- Returns
-
an array consisting of elements of the iterable collection
- Source
- Array.scala
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.
Type parameters
- T
-
the element type of the array
Value parameters
- f
-
the function that is repeatedly applied
- len
-
the number of elements returned by the array
- start
-
the start value of the array
Attributes
- Returns
-
the array returning
lenvalues in the sequencestart, f(start), f(f(start)), ... - Source
- Array.scala
Returns a new scala.collection.mutable.ArrayBuilder.
Returns a new scala.collection.mutable.ArrayBuilder.
Type parameters
- T
-
the element type of the array to be built
Value parameters
- t
-
the
ClassTagproviding runtime type information forT
Attributes
- Source
- Array.scala
Creates array with given dimensions.
Creates array with given dimensions.
Type parameters
- T
-
the element type of the array
Value parameters
- n1
-
the number of elements in the 1st dimension
Attributes
- Source
- Array.scala
Creates a 2-dimensional array.
Creates a 2-dimensional array.
Type parameters
- T
-
the element type of the array
Value parameters
- n1
-
the number of elements in the 1st dimension
- n2
-
the number of elements in the 2nd dimension
Attributes
- Source
- Array.scala
Creates a 3-dimensional array.
Creates a 3-dimensional array.
Type parameters
- T
-
the element type of the array
Value parameters
- 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
Attributes
- Source
- Array.scala
Creates a 4-dimensional array.
Creates a 4-dimensional array.
Type parameters
- T
-
the element type of the array
Value parameters
- 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
Attributes
- Source
- Array.scala
Creates a 5-dimensional array.
Creates a 5-dimensional array.
Type parameters
- T
-
the element type of the array
Value parameters
- 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
Attributes
- Source
- Array.scala
Returns an array containing a sequence of increasing integers in a range.
Returns an array containing a sequence of increasing integers in a range.
Value parameters
- end
-
the end value of the array, exclusive (in other words, this is the first value not returned)
- start
-
the start value of the array
Attributes
- Returns
-
the array with values in range
start, start + 1, ..., end - 1up to, but excluding,end. - Source
- Array.scala
Returns an array containing equally spaced values in some integer interval.
Returns an array containing equally spaced values in some integer interval.
Value parameters
- end
-
the end value of the array, exclusive (in other words, this is the first value not returned)
- start
-
the start value of the array
- step
-
the increment value of the array (may not be zero)
Attributes
- Returns
-
the array with values in
start, start + step, ...up to, but excludingend - Source
- Array.scala
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.
Type parameters
- T
-
the element type of the array
Value parameters
- f
-
The function computing element values
- n
-
The number of elements in the array
Attributes
- Returns
-
An
Arrayconsisting of elementsf(0),f(1), ..., f(n - 1) - Source
- Array.scala
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.
Type parameters
- T
-
the element type of the array
Value parameters
- f
-
The function computing element values
- n1
-
the number of elements in the 1st dimension
- n2
-
the number of elements in the 2nd dimension
Attributes
- Source
- Array.scala
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.
Type parameters
- T
-
the element type of the array
Value parameters
- f
-
The function computing element values
- 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
Attributes
- Source
- Array.scala
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.
Type parameters
- T
-
the element type of the array
Value parameters
- f
-
The function computing element values
- 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
Attributes
- Source
- Array.scala
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.
Type parameters
- T
-
the element type of the array
Value parameters
- f
-
The function computing element values
- 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
Attributes
- Source
- Array.scala
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')}.
Type parameters
- T
-
the element type of the array
Value parameters
- x
-
the selector value
Attributes
- Returns
-
a UnapplySeqWrapper that provides sequence-like access to the array elements
- Source
- Array.scala
Concrete fields
Attributes
- Source
- Array.scala
Attributes
- Source
- Array.scala
Attributes
- Source
- Array.scala
Attributes
- Source
- Array.scala
Attributes
- Source
- Array.scala
Attributes
- Source
- Array.scala
Attributes
- Source
- Array.scala
Attributes
- Source
- Array.scala
Attributes
- Source
- Array.scala
Implicits
Implicits
Provides an implicit conversion from the Array object to a collection Factory.
Provides an implicit conversion from the Array object to a collection Factory.
Type parameters
- A
-
the element type of the array to be created
Value parameters
- dummy
-
the
Arraycompanion object used to trigger the implicit conversion
Attributes
- Source
- Array.scala