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 wanted to point out that one should not reference base properties of the hashtable indiscriminately in generic functions, as they may have been overridden (or overloaded) by items of the hashtable.

For instance, the hashtable $hash=@{'keys'='lots of them'} will have the base hashtable property, Keys overridden by the item keys, and thus doing a foreach ($key in $hash.Keys) will instead enumerate the hashed item keys's value, instead of the base property Keys.

Instead the method GetEnumerator or the keys property of the PSBase property, which cannot be overridden, should be used in functions that may have no idea if the base properties have been overridden.

Thus, Jon Z's answer is the best.