PowerShell array initialization

Question

What's the best way to initialize an array in PowerShell?

For example, the code

$array = @() for($i=0; $i -lt 5;$i++) {     $array[$i] = $FALSE } 

generates the error

Array assignment failed because index '0' was out of range. At H:\Software\PowerShell\TestArray.ps1:4 char:10 +         $array[$ <<<< i] = $FALSE 

Answer 1

Here's two more ways, both very concise.

$arr1 = @(0) * 20 $arr2 = ,0 * 20 

Answer 2

You can also rely on the default value of the constructor if you wish to create a typed array:

> $a = new-object bool[] 5 > $a False False False False False 

The default value of a bool is apparently false so this works in your case. Likewise if you create a typed int[] array, you'll get the default value of 0.

Another cool way that I use to initialze arrays is with the following shorthand:

> $a = ($false, $false, $false, $false, $false) > $a False False False False False 

Or if you can you want to initialize a range, I've sometimes found this useful:

 > $a = (1..5)    > $a 1 2 3 4 5 

Hope this was somewhat helpful!