PowerShell - Arrays
1
# Example of PowerShell Arrays
To create an array that holds a given set of items, separate those items with
commas:
PS >$myArray = 1,2,"Hello World"
PS >$myArray
1
2
Hello World
To create an array of a specific size, use the New-Object cmdlet:
PS >$myArray = New-Object string[] 10
PS >$myArray[5] = "Hello"
PS >$myArray[5]
Hello
To store the output of a command that generates a list, use variable assignment:
PS >$myArray = Get-Process
PS >$myArray
Handles NPM(K) PM(K) WS(K) VM(M) CPU(s) Id ProcessName
------- ------ ----- ----- ----- ------ -- -----------
274 6 1316 3908 33 3164 alg
983 7 3636 7472 30 688 csrss
69 4 924 3332 30 0.69 2232 ctfmon
180 5 2220 6116 37 2816 dllhost
(...)
To create an array that you plan to modify frequently, use an ArrayList, as
shown by example below:
Using an ArrayList to manage a dynamic collection of items
PS >$myArray = New-Object System.Collections.ArrayList
PS >[void] $myArray.Add("Hello")
PS >[void] $myArray.AddRange( ("World","How","Are","You") )
PS >$myArray
Hello
World
How
Are
You
PS >$myArray.RemoveAt(1)
PS >$myArray
Hello
How
Are
You
