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st: Macro dissapears after forval or foreach


From   <Stefan.Gawrich@hlpug.hessen.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: Macro dissapears after forval or foreach
Date   Wed, 24 Feb 2010 15:28:28 +0100

Dear Statalisters,

I'm just curious why running macros in forval or foreach 
disappear after the loop has finished.

Example:

foreach x in 0 1 {	
di "value: `x'"
}
di "value: `x'"

Following Stata 11 help for foreach and forvalues, 
both commands set local macros to given values.
According to the manual locals are available 
during the execution of the program or do-file 
unless they are deleted or overwritten.
So it should be there, shouldn't it? 


With dynamic value lists or "continue" there is some 
sense in preserving the last processed value.

***

Yes, I know workarounds... ;-))

Best wishes 

Stefan




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