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Posted: Thu Jun 24, 2010 6:53 pm

in one of my scripts i have to verify if there are variables made already, but some of my variables have _ where there are spaces, i tried

Wizard Joined: 22 Mar 2007 Posts: 2320

I'm afraid you aren't making yourself very clear. You should state what exactly it is you are trying to do.

From what you have given, I surmise that you are trying to create variables and aliases based on text from the mud. The text contains spaces, and the corresponding variable and alias names replace the spaces with underscores. I assume from what you have _not_ said that the variable and alias names are being correctly transformed to use underscores?

My next question is, how is the variable being made? You have not shown us that. Are you certain that the variable actually exists in the cases where you think aliases are being overwritten?

Third, does the variable in question actually have a value? If it does not have a value, or the value is 0, your statement will evaluate as false, and the alias will be overwritten.

As an aside, if you are only worried about the case where the variable does not exist or has a 0 value, you could use an ! to negate your query. "!@variable" will evaluate as true if the variable does not exist or is zero.

Posted: Fri Jun 25, 2010 2:49 pm

actually i just noticed im making it wrong, im wanting to check to see if i have an alias before i make a new one, right now im looking for a variable but i was crazy ... i was asleep when i was writing this script, i just dont want to overwrite the alias' when i make the new ones ... but the script works even that code works, i just dont have a variable for every area, i keep the alias made, and i have paths made for them, i just need this to make the alias with newareanow so i can search for that and see what areas im missing my speedwalks for ...

Wizard Joined: 22 Mar 2007 Posts: 2320

Ah! If you haven't figured it out already, a way to test whether a setting exists is the %class() function. It will return 1 if it exists and is enabled, 0 if it exists and is disabled, and -1 if it doesn't exist.