How to change all the keys of a hash by a new set of given keys

Question

How do I change all the keys of a hash by a new set of given keys?

Is there a way to do that elegantly?

Answer 1

i assume you want to change the hash keys without changing the values:

hash = {
   "nr"=>"123",
   "name"=>"Herrmann Hofreiter",
   "pferd"=>"010 000 777",
   "land"=>"hight land"
}
header = ["aa", "bb", "cc", "dd"]
new_hash = header.zip(hash.values).to_h

Result:

{
   "aa"=>"123",
   "bb"=>"Herrmann Hofreiter",
   "cc"=>"010 000 777",
   "dd"=>"high land"
}