Forum Discussion
correct syntax for boolean expressions
I experiencing errors with forming a simple boolean expression that would be valid in most "C like" languages ( if we added an equals sign = 😞
set var1 $var2 && !$var3
error: [wrong args][set ...
After a lot of trial-and-error, I finally found a syntax that was accepted by BIG-IP iRule editor :
if { [expr {[expr $var1 ne ""] || [expr $var2 ne null]}] } {
set var3 1
}
However I receive runtime error :
01220001:3: TCL error: /Common/my-irule.conf - syntax error in expression " ne ": unexpected operator ne while executing "expr $var1 ne """