vexx32

function Get-Age {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory)]
        [ValidateScript(
            {
                $_ -lt [datetimeoffset]::UtcNow
            }
        )]
        [datetimeoffset]

kevinblumenfeld

Credit: Mark Kraus
Website: https://get-powershellblog.blogspot.com

Collection Type Guidence

When to use what

• Use Arrays if you know the element types and have a fixed length and/or known-up-front collection size that will not change.
• Use ArrayList if you have an unkown collection size with either unknown or mixed type elements.
• Use a Generic List when know the type of the elements but not the size of the collection.
• Use a HashTable if you are going to do key based lookups on a collection and don't know the object type of the elements.
• Use a Dictionary<TKey, TValue> you are going to do key based lookups on a collection and you know the type of the elements.
• Use a HashSet when you know the type of elements and just want unique values and quick lookups and assignmnets.

indented-automation

function Update-PesterTest {
    [CmdletBinding()]
    param (
        [Parameter(Mandatory, ValueFromPipeline, ValueFromPipelineByPropertyName)]
        [Alias('FullName')]
        [String]$Path
    )

    begin {
        $shouldParams = [String[]](Get-Command Should).Parameters.Keys