Adds the null coalesc operator from C# to Powershell (As close as we get anyway)

null-coalesc-operator.psm1

<#
    Adds the null coalescing operator.

    Use e.g:
    `$Color = $Settings.Color |?? "blue"`
#>

function NullCoalesc {
    param (
        [Parameter(ValueFromPipeline=$true)]$Value,
        [Parameter(Position=0)]$Default
    )
    
    if ($Value) { $Value } else { $Default }
}

Set-Alias -Name "??" -Value NullCoalesc