[yunqa.de] TDisqlite3Statement.free - test if "freed"
- From: "Clyde England" <clyde@xxxxxxxx>
- To: yunqa@xxxxxxxxxxxxx
- Date: Sat, 18 Jul 2009 17:56:59 +0800
Hi,
After I have finished with a TDisqlite3Statement I use the free
method to release the corresponding memory. This works fine.
However, I have a need later on in the code to see if this object has
actually been freed or not. I can't test for = "nil" because my
understanding is that the free method just leaves a "dangling
pointer".
My solution is to now always use FreeandNil() for clean up so I can
then test for "nil". So instead of something like:
stmt.free;
I now use:
Freeandnil(stmt);
My questions:
1. Is there a better way to test if TDisqlite3Statement has been freed.?
2. Are there any hidden problems (or performance issues) with using
Freeandnil to free a TDisqlite3Statement
3. Should I just be using the following code instead:
stmt.free;
stmt := nil;
Thanks
Clyde
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