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Re: Can't use @count with bindings

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Re: Can't use @count with bindings

Subject: Re: Can't use @count with bindings
From: mmalcolm crawford <email@hidden>
Date: Sat, 18 Dec 2004 02:27:03 -0800


On Dec 18, 2004, at 2:00 AM, Frédéric Testuz wrote:

I tried to bind a text field to myArray.@count[File's Owner(MyDocument)]. But when I run the application I have this message : [<NSCFArray 0x3025c0> addObserver:forKeyPath:options:context:] is not supported. Key path: @count Why ? myArray IS an array. If I understand the documentation on KVC, you can use @count keypath on an array.

KVC, yes; KVO...?

I have to use a NSArrayController bind to myArray[File's Owner (MyDocument)] to obtain @count. Why the first method don't work ?

As the error message says, arrays per se don't support observing of count. If you're using an array with bindings, use an array controller...

mmalc

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Re: Can't use @count with bindings
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