I am using Seqan to do multiple pattern matching. I have a lot of substrings (needles) and it takes up to 3 minutes to create the Pattern class. I am thinking of "serializing" the created Pattern class to a file (do it once), and load it after for future uses. This includes saving the data structure of Graph and property maps, etc, to a file and load them back. Could somebody please suggest me a easy way to implement this ? Alex.