2007/10/24, Mike Schrag <[EMAIL PROTECTED]>:
>
> Because NSArray has a custom implementation of valueForKey that tries
> to call whatever key you give it on the elements of the array ... For
> instance, "array.name" returns an array of the names of all the
> elements in the array. The only exceptions to this are @ operators
> and "count". What you want is WOConditional condition =
> downloads.count (negate = false).
I've notice one thing with NSDictionary:
you can call directly the key of the element to get the value:
dict = {key1 = "MyValue1", key2 = "MyValue2"}
str : WOString {
value = dict.key1;
}
and result is MyValue1.
is this how dictionaries work?
ms
>
> On Oct 24, 2007, at 9:19 AM, Miguel Arroz wrote:
>
> > Hi!
> >
> > Sometimes I really think I should change business!
> >
> > I have this binding:
> >
> > ShowDowndloadsConditional: WOConditional {
> > condition = downloads.isEmpty;
> > negate = true;
> > }
> >
> > "downloads" is an NSArray.
> >
> > When running, I get this:
> >
> > Reason:
> > <my.top.secret.package.name.ExportDownloadItem 0xb95569> valueForKey
> > (): lookup of unknown key: 'isEmpty'. This class does not have an
> > instance variable of the name isEmpty or _isEmpty, nor a method of
> > the name isEmpty, _isEmpty, getIsEmpty, or _getIsEmpty
> >
> > The ExportDownloadItem is an object in the array.
> >
> > My question is... why!?!?!? :)
> >
> > If I do this the dull way (write a method that returns
> > downloads.isEmpty() ) and bind to it, this works.
> >
> > Yours
> >
> > Miguel Arroz
> >
> > Miguel Arroz
> > http://www.terminalapp.net
> > http://www.ipragma.com
> >
> >
> >
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> >
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>
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