Amazing! I agree, no use of this comes straight to mind, other than being a nice addition to Art Carpenters "Maximise Your Indespensability" paper, but it is nontheless very cool.

I will try to think of a practical use for this :)

Thanks

2009/1/16 ./ ADD NAME=Data _null_, <iebupdte@gmail.com>: > On 1/16/09, karma <dorjetarap@googlemail.com> wrote: >> I think this raises another interesting question, can SAS macro create >> macro code that is executable at a later time? As far as I know, Lisp >> allows macro code to create macro code ad infinitum. I don't think SAS >> does allow this, but I would be happy to be proven wrong on this. An >> example: >> >> %let c = %superq(%put 1;); >> %unquote(c); > > This doesn't work because SUPERQ only works on macro variables and the > unquote is missing & for &C. But it can be made to work see lines 1 > and 2 below. The rest is a macro that writes a macro. I can't think > of a use for this today but I think I actually coded something similar > many years ago when I was "macro happy". > > > > 1 %let c = %nrstr(%%put NOTE: &systime;); > 2 %unquote(&c); > NOTE: 09:08 > 3 > 4 > 5 %macro writes1(name=hello); > 6 %let macro = %nrstr(%%)macro &name(called=&sysmacroname) > %nrstr(; %%put NOTE: MY name is &sysmacroname, > 6 ! called by &called; %%mend;); > 7 %put _local_; > 8 %unquote(&macro) > 9 %unquote(%&name) > 10 %mend writes1; > 11 > 12 > 13 %writes1; > WRITES1 MACRO macro hello(called=WRITES1) put NOTE: MY name is > sysmacroname called by called mend > WRITES1 NAME hello > NOTE: MY name is HELLO, called by WRITES1 >