Bernard Devlin wrote:
I'm puzzled by Ken's remark about running out of IDs. What is the upper
limit to the number of IDs?
About 2 billion, which seems like a lot but think about:
Suppose you create and delete and recreate complex objects like a
dataGrid, each of which contains hundreds of objects. Do that several
thousand times, and consider the life of the document. If it's in use
for a few years, the possibility of reaching the ID limit is no longer
merely theoretical.
Once the max number of IDs has been used, a wide range of unpredictable
behaviors start happening. You can try this yourself by setting the ID
of an object to the highest possible value, and then clone it. The
clone will be created, but it cannot be selected, and attempts to set
its properties fail. IIRC from the last time I tested this, nor error
is thrown, it just stops working normally and enters into a netherland
of oddities.
I would feel more comfortable about the dataGrid and other complex
objects if I new there was a plan in place to raise the ID limit.....
--
Richard Gaskin
Fourth World
LiveCode training and consulting: http://www.fourthworld.com
Webzine for LiveCode developers: http://www.LiveCodeJournal.com
LiveCode Journal blog: http://LiveCodejournal.com/blog.irv
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