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st: a question about local macro
I have a question about the local macro. I could not figure out why and
how to get around it. Hope that you can help me out.
Here is the question. In my do file, I have two commands as follows:
local IC="IC412 IC413"
reg y `IC'
The question is that when I run the two commands together
it works. But I found that if I then re-run the second command without
running the first command, I thought it should give the same results
since i have already defined the local macro, so I do not need to
redefine it. It turns out that this time stata treated `IC' as empty.
That means if I want to run the second command, i always need to run the
two commands together. Am I correct? Any explanations? Is there anyway
to get around this?
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