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

I think the most compact code to merge (without overwriting existing keys) would be this:

function Merge-Hashtables($htold, $htnew)
{
   $htnew.keys | where {$_ -notin $htold.keys} | foreach {$htold[$_] = $htnew[$_]}
}

I borrowed it from Union and Intersection of Hashtables in PowerShell