Date:         Fri, 18 Aug 2006 11:45:13 -0400
Reply-To:     "Dorfman, Paul" <paul_dorfman@MERCK.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         "Dorfman, Paul" <paul_dorfman@MERCK.COM>
Subject:      Re: Manipulate word list
Comments: To: yom <yomsas@GMAIL.COM>
Content-Type: text/plain

Yom,

What is the rule? If it is "create a new macro variable similar to LIST,
containing only the blank-delimited tokens var1 var3 var4 var6" then what is
wrong with

%let new_list = var1 var3 var4 var6 ;

I suspect you have something else in mind, though. Maybe "regardless of the
content of the blank-delimited LIST, eliminate the tokens var2 and var5 from
it"? Why, there are many ways of going about it. Say,

%let list = "var1 var2 var3 var4 var5 var6";
%let kill =  var2 var5 ;

data _null_ ;
   retain list  &list  ;
   do _n_ = 1 by 1 while (1) ;
      token = scan ("&kill", _n_) ;
      if missing (token) then leave ;
      list = tranwrd (list, strip (token), '') ;
   end ;
   call symput ('newlist', quote (strip (compbl (list)))) ;
run ;

Kind regards
------------
Paul Dorfman
Jax, FL
------------

+-----Original Message-----
+From: SAS(r) Discussion [mailto:SAS-L@LISTSERV.UGA.EDU] On
+Behalf Of yom
+Sent: Friday, August 18, 2006 5:56 AM
+To: SAS-L@LISTSERV.UGA.EDU
+Subject: Manipulate word list
+
+
+Dear All,
+
+ Do you know if there exists a tutorial how to manipulate the
+lists? For
+example, I would like to drop a few words from a list.
+
+%let list = "var1 var2 var3 var4 var5 var6";
+
+Please do you know how to obtain the new list "var1 var3 var4 var6" ?
+
+Thank you very much.
+
+yom
+
+


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