Spencer Simpson wrote:
I’m not going to pretend I understand what’s going on. However, I’ve found
that aliases act flaky if you refer to them too many times between fetches.
I don't think they're flakey, you just have to understand how they work.
Every time you fetch a new record, that updates the alias. If you need a
variable that doesn't chnage with fetch, then as you say, use a normal
variable.
Object aliases are a little more difficult since you can't assign a null
object to a variable...
Another way to simulate a null object in a variable is to assign it to
an object that has no dimension (e.g. a line with the start and end
point in the same place, or pline or region with 0 nodes). Then to test
"null-ness" check it's length or area and see if it's zero. I often use
this technique in functions that return an object when a bad situation
would otherwise cause a crash.
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