Re: Keyed archiver

FROM : Joakim Danielson
DATE : Sun Nov 21 15:09:37 2004

> I can archive and restore a string with the value "$noll" but I cannot
> do the same with "$null".
>
>


I tried this with a simple ToDo application I have written and I got
the same result when I put "$null" in a text field. After examining the
saved file I realized that it contained some value/variables that
started with a $ sign, such as $version, $objects_ etc that was
inserted by the coder when saving the document.

I searched the documentation and found this explanation:

"You should avoid using “$” as a prefix for your keys. The keyed
archiver and unarchiver use keys prefixed with “$” for internal values.
Although they test for and mangle user-defined keys that have a “$”
prefix, this overhead slows down archiving performance."

It seems that the second sentence don't apply to $null.

Joakim