[Gambas-user] How to return results and status from a function to the calling procedure??

[gambas at ...1938...]

Hi Benoit!

Message understood. :-)
Many thanks!

Greetz
Stevie

Am Montag, 8. Dezember 2008 15:42:26 schrieb Benoit Minisini:
> On lundi 8 décembre 2008, gambas at ...1938... wrote:
> > Hi List,
> >
> > stupid question.
> > What I wanted to do is
> > - call a function and check if all went OK (True/False)
> > - If True get the result and go on.
> > - If False do some error managemen
> >
> > In principle it is an easy task, but:
> > - Using global vars is (citation): "Poor programming practise" ;-)  (no
> > offense)
> > - Using ByRef is slower then copy the content
> >
> > So, what's the best, cleanest or preferred way to do it in Gambas?
> >
> > Greetz
> > Stevie
>
> If "all was not ok" means that there was an error, then you should use
> Error.Raise() and error management.
>
> If "all was not ok" is actually normal, then your function should return a
> boolean that will tell you the result.
>
> If your function also return a value, then you can use one of the value to
> indicate a problem. For example, a function that returns a Date can return
> NULL for errors.
>
> If you can't use one of the value to indicate an error, then you must do
> something else!