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Re: st: RE: Behaviour of -tokenize- shouldn't it drop the parsing character?


From   "Austin Nichols" <austinnichols@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: Behaviour of -tokenize- shouldn't it drop the parsing character?
Date   Thu, 5 Oct 2006 10:26:29 -0400

Another approach uses -foreach-, avoiding -tokenize- altogether:

local test 1 2 3 | 4 5 6| 7 8 | 9
local test : subinstr local test "|" `"" ""', all
local test `""`test'""'
local i 1
foreach element of local test {
 di `"element `i++' is `element'"'
 foreach j of local element {
  di _col(10) "and now do something to each piece: " _c
  di "ln(`j')=" ln(`j')
 }
}

I suppose if you really needed macros named 1, 2, 3,... you could make
them inside the loop.

On 10/4/06, David Elliott <dcelliott@gmail.com> wrote:
Thank you, Scott - I didn't have access to the paper manual and -help
tokenize- omitted that little fact.  Your solution would work with my
first example but for more complex strings like my example: 1 2 3 | 4
5 6| 7 8 | 9 where I want the parse to give me the groups separated by
the "|" as tokens - not the individual items within the groups (that
comes later).  For now I am going to do the following:

local test 1 2 3 | 4 5 6| 7 8 | 9
tokenize `"`test'"' , parse("|")
local i = 1
while `"`i'"' != "" {
   tokenize `"`i'"'
   local j = 1
   while `"`j'"' != "" {
       do something with j
       local ++j
       }
   local ++i
   macro shift
}
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