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Creating an Array: Difference between revisions

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Creating an Array (view source)

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{{taskDeprecatedTask}}
'''Please do not add new code, and merge existing code to the [[Arrays]] task.'''
 
This task is about numerically-indexed arrays. For '''hashes''' or '''associative arrays''', please see [[Creating an Associative Array]].
In this task, the goal is to create an [[array]].
 
In this task, the goal is to create an [[array]]. Mention if the [[array base]] begins at a number other than zero.
==[[mIRC]]==
In addition, demonstrate how to initialize an array variable with data.
'''Interpeter:''' mIRC Script Editor
'''Libraries:''' [[mArray Snippet]]
alias creatmearray { .echo -a $array_create(MyArray, 5, 10) }
 
==[[Visual Basic 2005.Net]]==
Dim myArray as new ArrayList
Dim myArray2 as new ArrayList = { "Item1", "Item2" }
 
==[[Quick Basic]]==
'''Interpeter:''' QB 4.5 or PB 7.1
'''Libraries:''' [[None are needed]]
 
' $DYNAMIC
DIM SHARED myArray(-10 TO 10, 10 TO 30) AS STRING
REDIM SHARED myArray(20, 20) AS STRING
myArray(1,1) = "Item1"
myArray(1,2) = "Item2"
 
==[[Javascript]]==
var myArray = new Array();
var myArray2 = new Array("Item1","Item2");
var myArray3 = ["Item1", "Item2"];
 
==[[3DS Max 8 - MaxScript]]==
myArray = #()
myArray2 = #("Item1", "Item2")
 
 
==[[Python]]==
'''Interpeter:''' Python
'''Libraries:''' [[None are needed]]
Array=[
[0,0,0,0,0,0],
[1,1,1,1,1,1],
[2,2,2,2,2,2],
[3,3,3,3,3,3]
]
#You would call the array by this code. This will call the 3rd 1 on the second list
Array[1][3]}
 
Alternatively you can create it programmatically. e.g.
 
Array = [ [i]*6 for i in range(4) ]
 
Create an empty array:
 
Array = []
 
==[[Perl]]==
'''Interpeter:''' Perl
'''Libraries:''' [[None are needed]]
 
@Array=(
[0,0,0,0,0,0],
[1,1,1,1,1,1],
[2,2,2,2,2,2],
[3,3,3,3,3,3]
);
#You would call the array by this code. This will call the 3rd 1 on the second list
print $Array[1][3];
 
# Alternative:
my @array_using_qw = qw/coffee sugar cream/;
 
==[[PHP]]==
$array = array(
array(0, 0, 0, 0, 0, 0),
array(1, 1, 1, 1, 1, 1),
array(2, 2, 2, 2, 2, 2),
array(3, 3, 3, 3, 3, 3)
);
#You would call the array by this code. This will call the 3rd 1 on the second list
echo $array[1][3];
 
==[[Ruby]]==
 
array = [
[0, 0, 0, 0, 0, 0],
[1, 1, 1, 1, 1, 1],
[2, 2, 2, 2, 2, 2],
[3, 3, 3, 3, 3, 3]
]
# You would call the array by this code. This will call the 3rd 1 on the second list
array[1][3]
 
# You can also create a sequential array from a range using the 'splat' operator:
array = [*0..3]
#=> [0,1,2,3]
# This lets us create the above programmatically:
array = [*0..3].map {|i| [i] * 6}
#=> [[0, 0, 0, 0, 0, 0], [1, 1, 1, 1, 1, 1], [2, 2, 2, 2, 2, 2], [3, 3, 3, 3, 3, 3]]
 
==[[Ada]]==
'''Compiler:''' GCC 4.1.2
type Arr is array (Positive range <>) of Integer;
Uninitialized : Arr (1 .. 10);
Initialized_1 : Arr (1 .. 20) := (others => 1);
Initialized_2 : Arr := (1 .. 30 => 2);
Const : constant Arr := (1 .. 10 => 1, 11 .. 20 => 2, 21 | 22 => 3);
 
{{array operation}}
 
==[[OCaml]]==
let nbItems = 5 and initialValue = 0 in
make_vect nbItems initialValue
 
 
==[[Java]]==
 
For example for an array of 10 int values:
int[] intArray = new int[10];
 
==[[C]]==
'''Compiler:''' GCC, MSVC, BCC, Watcom
 
// Dynamic
int n = 10 * sizeof(int);
int *myArray = (int*)malloc(n);
memset(myArray, 0, n);
myArray[0] = 1;
myArray[1] = 2;
 
// Static
int myArray2[10] = { 1, 2, 0}; /* 3..9 := 0 */
 
==[[C++]]==
'''Compiler:''' GCC, MSVC, BCC, Watcom
 
// Dynamic
const int n = 10;
int* myArray = new int[n];
if(myArray != NULL)
{
myArray[0] = 1;
myArray[1] = 2;
delete[] myArray;
}
 
// Static
int myArray2[10] = { 1, 2, 0}; /* 3..9 := 0 */
 
// STL
std::vector<int> myArray3(10);
myArray3.push_back(1);
myArray3.push_back(2);
 
// Qt
QVector<int> myArray4(10);
myArray4.push_back(1);
myArray4.push_back(2);
 
// MFC
CArray<int,int> myArray5(10);
myArray5.Add(1);
myArray5.Add(2);
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