[Zope] Re: RE: [Zope] Grabbing specific indexes from an #in

[Michel Pelletier]

> -----Original Message-----
> From: craigv@jps.net [mailto:craigv@jps.net]
> Sent: Thursday, July 22, 1999 2:32 PM
> To: zope@zope.org
> Subject: [Zope] Re: RE: [Zope] Grabbing specific indexes from an #in
> 
> 
> Hope I don't seem dense, but could I get a bit more clarification?
> 
> Right now I am iterating through like this:
> <!--#in "objectValues('Folder')" sort=sort_code-->
> 
> ... and pulling out certain properties of each folder:
> <!--#var "_['some_property']"-->
> 
> How do I achieve the same goal while picking the folder at a specific
> sequence? For example, I want to display some properties of 
> the folders
> at indexes 2, 5, and 7 without iterating through all of the folders. 
> 
> Thanks in advance for your help.
> 

<!--#with "_(list = objectValues['Folder'])"-->
  <!--#in "[list[2], list[5], list[7]]"-->
    <!--#var some_property-->
  <!--#/in-->
<!--#/with-->

-Michel

> --Craig
> 
> > > I am trying to find a way to grab a specific index from an 
> > > #in. I would
> > > like to use this much like an array in which I could ask for 
> > > the object
> > > at index [i]. Is there a way to grab specific indexes from an #in
> > > without iterating through the entire list of objects?
> > > 
> > 
> > No need to use #in if you just want one item:
> > 
> > <!--#var "sequence[index]"-->
> > 
> > you can slice too:
> > 
> > <!--#in "sequence[5:]"-->
> > ...
> > <!--#/in-->
> > 
> > gives you the fifth to the last element.  Note the quotes.  
> This is an
> > evaluation of an expression.
> > 
> > -Michel
> > 
> > -Michel
> > 
> > > Thanks, 
> > > 
> > > --Craig
> > > 
> > > 
> > > _______________________________________________
> > > Zope maillist  -  Zope@zope.org
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> > > 
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> > > zope-dev@zope.org - 
http://www.zope.org/mailman/listinfo/zope-dev )
> > 
> 
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> 
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