2025-09-03-array-lists.ps1

$tip = [tiPS.PowerShellTip]::new()
$tip.CreatedDate = [DateTime]::Parse('2025-09-03')
$tip.Title = 'Array Lists'
$tip.TipText = @'
An Array list is similar to an array, but it does not have a fixed size like an array does.

With a fixed-sized array and you add an item to the array, the array is actually recreated with the additional item. This can impact performance, when working with thousands of items.

Another concern with fixed-size arrays is that there's no simple method to remove an item.

'@
$tip.Example = @'
# In PowerShell, you can create an Array list using the `System.Collections.ArrayList` class. Here's how you can create and use an Array list:

[System.Collections.ArrayList]$computers = @('Server1', 'Server2', 'Server3')

# To create an empty array ready to add items

$computers=New-Object System.Collections.ArrayList
'@
$tip.Urls = @(
	'https://learn.microsoft.com/en-us/training/modules/work-arrays-hash-tables-window-powershell-scripts/3-work-array-lists-windows'
	'https://learn.microsoft.com/en-us/powershell/scripting/learn/deep-dives/everything-about-arrays?view=powershell-7.5#arraylist'
)
$tip.Category = [tiPS.TipCategory]::Performance # Community, Editor, Module, NativeCmdlet, Performance, Security, Syntax, Terminal, or Other.
$tip.Author = 'Adrian Muscat (adrimus)' # Optional. Get credit for your tip. e.g. 'Daniel Schroeder (deadlydog)'.
#$tip.ExpiryDate = [DateTime]::Parse('2024-10-30') # Optional. If the tip is not relevant after a certain date, set the expiration date. e.g. Announcing a conference or event.

# Category meanings:
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