;+ ;NAME: ; undefined ;PURPOSE: ; Tests whether a variable is undefined ;CALLING SEQUENCE: ; if ~undefined(var) then print,'Hooray!' ; ; INPUT: ; var: A variable to be tested ; ;OUTPUT: ; 1 on success, 0 on fail ; ; $LastChangedBy: pcruce $ ; $LastChangedDate: 2008-07-28 11:53:49 -0700 (Mon, 28 Jul 2008) $ ; $LastChangedRevision: 3311 $ ; $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/general/misc/undefined.pro $ ;- function undefined,v if size(v,/type) eq 0 then return,1 else return,0 end