Forum OpenACS Development: Re: uplevel with passed variables

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3: Re: uplevel with passed variables (response to 1)
Posted by Samer Abukhait on 01/12/04 10:52 PM
I came out to the following solution:

ad_proc -public myProc {Var} {} {
        upvar X_var vv_var
        set vv_var $Var
        uplevel {
          Some Code Using X_var
        }
}
I don’t know if this is the ‘most’ right solution.

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4: Re: uplevel with passed variables (response to 3)
Posted by Tom Jackson on 01/12/04 11:18 PM

If you run: 


myProc "var"

#The result will be the same as executing:

Some Code using X_var

You can try to pass things into the uplevel, but it will never work. Your proc would have the same effect if it were written: 

ad_proc -public myProc {} {} {        
    uplevel {
        Some Code Using X_var
    }
}
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5: Re: uplevel with passed variables (response to 4)
Posted by Nis Jørgensen on 01/13/04 10:57 AM
Samer, your example works fine with me. For instance:

ad_proc -public myProc {Var} {} {
        upvar X_var vv_var
        set vv_var $Var
        uplevel {
          set Y_var "${X_var}bar"
        }
}

myProc "foo"
set Y_var


returns "foobar" just as it should.
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7: Re: uplevel with passed variables (response to 3)
Posted by Tom Jackson on 01/13/04 06:09 PM

To answer your question if this is the most right solution: no it isn't. The use of uplevel/upvar is very application specific, and your example is about as far away from needing either of these features (and you use both), that you can get. If you have the actual code you want to run, then show us that so we can offer more a realistic assessment. Maybe start by reading the manual entry for uplevel/upvar.