Reserved keywords

[mooniron]

I would like to know whether we can use a string as a reserved keyword. For example I hold "and" keyword in a variable and I want to use it in an if statement like:

if (&quot;($myX == $myY) &quot;.$ao.&quot; ($myY < $myZ)&quot

and here I want the interpreter to understand $ao variable as and keyword. But of course it doesn't. Is there any way to do this?
Thanks..

 

[bluedragon2]

Try:

if ($ao eq &quot;and&quot {
if (($myX == $myY) && ($myY < $myZ)) {
do something;
}
elsif ($ao eq &quot;or&quot {
if (($myX == $myY) || ($myY < $myZ)) {
do something
}




Blue

If I wasn't Blue, I would just be a Dragon...

 

[PaulTEG]

if (eval(&quot;($myX == $myY) &quot;.$ao.&quot; ($myY < $myZ)&quot) {
might do it

HTH
--Paul

 

[teriviret]

Yes, &quot;eval&quot; is the way to go. It takes the string you give it as an argument, and does a run-time compiliation of it. So you can change $ao at run-time and actually change the logic that is evaluated.