machineboy2045

def string_intersection(strings, key = 0, intersection = '')
  letter = strings.first[key]
  return if letter.nil?

  if strings.map {|str| str[key] == letter}.all?
    return string_intersection(strings, key + 1, intersection + letter)
  else
    return intersection
  end
end

machineboy2045

  $scope.$watch('myOjbect', function(curr){
    console.log(curr);
  },true)