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
Members list
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.
Creates an array of Boolean objects
Creates an array of Boolean objects
Attributes
Creates an array of Byte objects
Creates an array of Byte objects
Attributes
Creates an array of Short objects
Creates an array of Short objects
Attributes
Creates an array of Char objects
Creates an array of Char objects
Attributes
Creates an array of Int objects
Creates an array of Int objects
Attributes
Creates an array of Long objects
Creates an array of Long objects
Attributes
Creates an array of Float objects
Creates an array of Float objects
Attributes
Creates an array of Double objects
Creates an array of Double objects
Attributes
Creates an array of Unit objects
Creates an array of Unit objects
Attributes
Concatenates all arrays into a single array.
Concatenates all arrays into a single array.
Value parameters
- xss
-
the given arrays
Attributes
- Returns
-
the array created from concatenating
xss
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.
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.
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
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.
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.
Attributes
- See also
-
java.util.Arrays#copyOf
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.
Attributes
- See also
-
java.util.Arrays#copyOf
Returns an array of length 0
Returns an array of length 0
Attributes
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)
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.
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.
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
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.
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
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.
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
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.
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
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.
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)), ...
Returns a new scala.collection.mutable.ArrayBuilder.
Creates array with given dimensions
Creates array with given dimensions
Attributes
Creates a 2-dimensional array
Creates a 2-dimensional array
Attributes
Creates a 3-dimensional array
Creates a 3-dimensional array
Attributes
Creates a 4-dimensional array
Creates a 4-dimensional array
Attributes
Creates a 5-dimensional array
Creates a 5-dimensional array
Attributes
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.
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
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.
Value parameters
- f
-
The function computing element values
- n
-
The number of elements in the array
Attributes
- Returns
-
A traversable consisting of elements
f(0),f(1), ..., f(n - 1)
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.
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
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.
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
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.
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
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.
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
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')}.
Value parameters
- x
-
the selector value
Attributes
- Returns
-
sequence wrapped in a scala.Some, if
xis an Array, otherwiseNone