Passing a hashtable as an argument to a function in PowerShell

Question

I have a problem in a PowerShell script:

When I want to pass a Hashtable to a function, this hashtable is not recognized as a hashtable.

function get         


        

Answer 1

$Input is an automatic variable that enumerates the input given.

Chose any other variable name and it'll work - although not necessarily as you might expect - to get the number of entries in a hashtable you need to inspect the Count property:

function Get-Length {
    param(
        [hashtable]$Table
    )

    $Table.Count
}

Write-Output is implied when you just leave the $Table.Count as is.

Also, the () suffix in the function name is unnecessary syntactic sugar with zero meaning when you declare your parameters inline with Param() - drop it