[Zope] If This AND This

[Nils Kassube]

* Tommy Johnson <tommy@7x.com> [2001-05-26 04:21]:

> Scratch that question. The one thing I didn't try WORKED! If anyone is
> interested, use & instead of &&

'&' is a bitwise and. 

1 & 2 = 0

'and' is a logical and.

1 and 2 = 2 (which is equivalent to true in Python) 
 
> That's it! And if you're continuing to wonder, use | instead of || for OR.

That's bitwise or. You probably want to use 'or'. Well,
it's easier to read, too...

> Now, I do have another question. Suppose you have a page running DTML, but
> want it to abort processing halfway through the page. Maybe a <dtml-unless>
> finds something and you want to abort processing any code below that
> <dtml-unless> block. How would you do that?

It depends. One way:

<dtml-unless something_found>
<dtml-raise NotFound> Sorry, web page not found </dtml-raise>
</dtml-unless>

Cheers,
Nils