Thanks all! I am basically doing what Jacqueline does and check to see if empty and then verify against a list of switches.
It does seem strange that we can’t check for the existence of a variable, but this works. Thanks, Steve MacLean > On Nov 24, 2018, at 11:35 AM, J. Landman Gay via use-livecode > <[email protected]> wrote: > >> How would I test to see if the $1 variable exists? > > I don't check for existence, I only check whether it's empty. > -- > Jacqueline Landman Gay | [email protected] > HyperActive Software | http://www.hyperactivesw.com > On November 24, 2018 8:04:50 AM bob--- via use-livecode > <[email protected]> wrote: > >> $# tells you how many parameters there are for a script. Perhaps if $# > 0 >> then... instead might work (I’ve not tried that). You might find using >> environment() potentially helps as well. The Dictionary has the details. If >> neither of those options work let me know. I have another way you could >> tackle the issue. >> >> - Bob Hall >> >>> On Nov 23, 2018, at 5:27 PM, Stephen MacLean via use-livecode >>> <[email protected]> wrote: >>> >>> However, the exists($1) never returns true, even when it should. Which >>> leads to to believe that’s not what I want to use. >>> >>> How would I test to see if the $1 variable exists? >> >> _______________________________________________ >> use-livecode mailing list >> [email protected] >> Please visit this url to subscribe, unsubscribe and manage your subscription >> preferences: >> http://lists.runrev.com/mailman/listinfo/use-livecode > > > > > _______________________________________________ > use-livecode mailing list > [email protected] > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode _______________________________________________ use-livecode mailing list [email protected] Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
