On Tue, Sep 16, 2008 at 2:40 PM, Arthur C. <[EMAIL PROTECTED]> wrote: > I have an NSDictionary that has to be written to disk, distributed and read > in again. > I would like to add an MD5 sum to the dictionary to make sure it has not been > modified/corrupted on the way. That can be done by making NSData using > NSArchiver and then passing it to MD5() from <openssl/md5.h>. > > But, the order in which keys/values are stored in the dict is not fixed. I > would like to know if there is a simple way to get a unique (reproducable) > MD5-sum.
I'd try adding a category method that gets all the dict's keys, sorts the keys array, creates an array consisting of the (now-sorted) key, value-for-that-key, key, value-for-that-key, key, value-for-that-key ..., then archives the array, then gets the MD5 sum from that archived array. In other words, the array would simply hold a series of key string objects, then the object for that key ... for every key in your sorted key list. ... but then, there might be a far easier way of doing it than that. :-) Just a thought. -- I.S. _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
