ruby on rails turn array into hash
1d_array = ["a", 1, "b", 2] 2d_array = [ ["a", 1], ["b", 2] ] 1d_hash = Hash(*1d_array) # result: {"a"=>1, "b"=>2} 2d_hash = 2d_array.to_h # result: {"a"=>1, "b"=>2} # You can also write it as 2d_hash = Hash(2d_array) # Note that both result in the same hash structure # The `.to_h` notation is useful for chainging off other methods # For example: User.pluck(:id, :name).to_h # If you need a more complex conversion you can use .map complex_array = [ ["a", 1, "alpha"], ["b", 2, "beta"] ] complex_hash = complex_array.map{|k, v1, v2| [k, {"order": v1, "greek": v2}]}.to_h # Again you can write it as Hash(complex_array.map{...})