[Gambas-user] How to realize AND, OR etc.

[Werner]

On 02/09/10 16:39, Rolf-Werner Eilert wrote:
> This is just a general question about programming, it doesn't refer to 
> Gambas specifically, but I would implement the results in Gambas.
>
> For some of my bigger projects I have had to implement IF and ELSE and 
> similar functions. I tried to manage AND, OR etc. too, but I failed. 
> Somehow I didn't find a proper way of implementing this logic. So up to 
> now I have filled this gap by simply putting several IF ELSE IF ELSE and 
> so on within each other. Of course this is somewhat tricky sometimes :-)
>
> Could someone here explain me how an AND and an OR can be implemented? 
> Are there general rules? I do not need the parser, it is there. I just 
> ask about the logic behind AND and OR for instance.
>
> Here are my thoughts so far:
>
> - Parser puts IF-clauses into array and logic (AND/OR) in between or 
> into separate list
>
> - IF-clauses are solved and results are stored e. g. in a boolean array
>
> - The ANDs and ORs from the list are processed with the boolean array 
> into a final result
>
> This does not, however, include looking for bracketed clauses... Oh my 
> goodness :-)
>
> Thanks for your help...
>
> Regards
>
> Rolf
>   
No sweat, it's just Ones and Zeroes...   :-D

It is not very clear (to me) what you actually want to achieve.
You might want to take a closer look at the SELECT statement. It takes a
lot of clutter out of code.

Regards
Werner