Am 2013-09-12 14:50, schrieb Frederic Da Vitoria:
Can someone explain what the line
if VST.AbsoluteIndex(XNode) > -1 then
actually means?
I didn't look at the code, but usually index = -1 means that the item was not
found. So maybe AbsoluteIndex's result should actually be signed?
And how would it ever reach the value -1?
Obviously there is no code that sets it to this value,
otherwise it would not compile with Cardinal type.
In this example, I guess the test is to avoid a bug if AddChild does not manage
to insert the root node. I don't know if AddChild could create a node without
inserting, but this is what the code seems to be testing.
But it is a useless "if" statement that doesn't test anything.
--
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