sorting - Sort hash by key, return hash in Ruby -

would best way sort hash , return hash object (instead of array):

h = {"a"=>1, "c"=>3, "b"=>2, "d"=>4} # => {"a"=>1, "c"=>3, "b"=>2, "d"=>4}  hash[h.sort] # => {"a"=>1, "b"=>2, "c"=>3, "d"=>4} 

in ruby 2.1 simple:

h.sort.to_h