You naturally want to leverage the PowerShell pipeline when you work with PowerShell. That’s the whole point, after all. The typical pattern is to get a bunch of things with a command, ideally a PowerShell cmdlet or function, and pipe them to another command. The second command consumes the pipeline input and uses it as the basis for its work.

Here is a simple PowerShell function that accepts pipeline input.

Function Invoke-Power {
    [CmdletBinding()]
    Param(
        [Parameter(ValueFromPipeline)]
        [int]$Value,
        [ValidateRange(2,10)]
        [int]$Power = 2
    )
    Begin {   }
    Process {
       Write-Host "Processing $Value to the power of $power" -ForegroundColor yellow
       [math]::Pow($value,$power)
    }
    end {   }
}