Albert
Interesting way do doing this, and of course it works. I was just
wishing for an easier way... although this would be farely fast.
Hmmm.. have to think about this. You and Tom's methods are two
ways that will work. I know that there are several places, and I
think this is where Manuel is coming from as well, that I have a
button/or eep or ?? that will define a variable within it's body
of code, but I don't test for this variable until the user has
done some other actions and I get into the module of code that
tests for all the users responces so far. Then when they preform
a certain action the action the code takes depends on this or
even several other actions they have taken..
I guess I could and probably should predefine the variable
farther upstream you might say in this sequence of events, but I
thought it would be a lot better to be able to query a function or
??? to tell if the user has done some present actions before-hand.
In most of the languages I have used to date, they have some way to
test for objects by a boolean method or similar ways. I know Rbase
doesn't have a boolean datatype although I wish it had at times.
I guess I'm just for the most part a lazy coder... ha,ha.
I did put in an request to the RDCC for this:
SET VAR vm_vexists = (CVAL('variable','varname')) and this would return a text
value of '1' for true and '0' for false. Then a second part for the datatype if
possible like ... 'INTEGER' or 'TEXT' so the return would look like ...
1,TEXT or 1,CURRENCY or 0,UNDEFINED
Thanks
Jim
--- Albert Berry <[EMAIL PROTECTED]> wrote:
> Here is one way to get a list of variables:
>
> OUTPUT TempFile.$$$
> SHOW VAR
> OUTPUT SCREEN
> CREATE TEMP TABLE VarList (VarName TEXT (18))
> LOAD VarList FROM TempFile.$$$ AS ASCII
> SELECT VarName FROM VarList
>
>
>
>
> Jim Limburg <[EMAIL PROTECTED]> wrote:
>
> >JM
> >
> >I don't know of a way either so I put in a request to the RDCC [1976]
> >Maybe If you and OTHERS do the same we can get our wish/dream
> >added before the next inline patch...
> >
> >hopefully
> >Jim Limburg
> >
> >--- "J.M. GRATIAS" <[EMAIL PROTECTED]> wrote:
> >>
> >> Hi all,
> >>
> >>
> >> I am looking for a way to check if a variable has been already defined.
> >>
> >> A way that don't display an error.
> >>
> >> Is there a function for that ?
> >>
> >> Or may be a tip ....
> >>
> >> TIA
> >>
> >>
> >> J.M. GRATIAS, Logimatique
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