Merging hashtables in PowerShell: how?

Question

I am trying to merge two hashtables, overwriting key-value pairs in the first if the same key exists in the second.

To do this I wrote this function which first remo

Answer 1

Here is a function version that doesn't use the pipeline (not that the pipeline is bad, just another way to do it). It also returns a merged hashtable and leaves the original unchanged.

function MergeHashtable($a, $b)
{
    foreach ($k in $b.keys)
    {
        if ($a.containskey($k))
        {
            $a.remove($k)
        }
    }

    return $a + $b
}