Mark Wieder wrote > > I think xml is probably the wrong format for this data. In order to > determine > the difference between versions you're going to have to unpack the xml > data, > find what has changed, pack that data back into xml, and store that. > That's a > lot of unnecessary work. >
Yes, but XML is so... Readable. :-) Mark Wieder wrote > > Much easier (and faster and less memory for storage) to store an array > whose > keys are the property names and whose elements are the values. Then use > Richard's merge function to find the deltas quickly. > I am sure that you are correct, but I could not create the script to demonstrate it. :-D Suppose that I have 10000 controls in the card (remember, it's a graphic application), and (if I understand correctly your advice) then I had to create 10000 arrays in memory to hold the properties of each control. Could this be the correct interpretation of your idea for this task? Old computer graphics programs have a limited number of undo. The user had to set manually the number of undo. I remember that there was a program (FreeHand or Ilustrator?) with a maximum number of undos of 10 (Ten). The program was really slow with this "huge" number of data in memory... :-O The first time that I tried to create an undo, some time ago, I simply copied the card contents to a new card in a hidden stack, before any operation that modified, create or delete any control. This Undo system could not be more simple, but it failed in a spectacular way. After a while, as the number of controls grows, the process of copying all controls become, more and more slow, until the stack became unresponsive and unusable. Al -- View this message in context: http://runtime-revolution.278305.n4.nabble.com/ANN-penTool-0-3-2h-with-scalable-gradients-tp4653241p4653462.html Sent from the Revolution - User mailing list archive at Nabble.com. _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
