Forum Discussion
Jul 05, 2014
I am not having good luck with a single expr and a complex boolean condition :
set var_1 [expr {($var_2 ne "") || ($var_3 ne null)}]
error: [parse error: PARSE syntax 489 {syntax error in expression "set var_1 [expr {($var_2 ne "") || ($var_3 ne null)}]": variable references require preceding $}][{($var_2 ne "") || ($var_3 ne null)}]
Could the problem here be that I am using variable names that contain underscores ?