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Re: Why won't this work!?

Subject: Re: Why won't this work!?
From: Kieran Kelleher <email@hidden>
Date: Wed, 24 Oct 2007 09:38:31 -0400
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NSKeyValueCoding returns an Object ...... I don't think it works with native types .... that's why we use .@count and not just .count I guess.

this method returns native boolean ....... not Boolean ..... I think that might be the problem with that not working for you. (just educated guess)

In any case I would try something like this (just a hunch without checking for you since no time to do that right now) ..... I think zero (like null) might evaluate to false ..... not sure without checking though....

ShowDowndloadsConditional: WOConditional {
	condition = downloads.@count;
	negate = true;
}

...or do what I usually do is Wonder is in your app .... use ERXGreaterThanConditional and compare count to zero

HTH, Kieran


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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