Cocoa @sum array operator too slow - alternatives?

Posted by icodestuff on Stack Overflow See other posts from Stack Overflow or by icodestuff
Published on 2010-04-28T01:32:55Z Indexed on 2010/04/28 1:33 UTC
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Filed under:

cocoa

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objective-c

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cocoa-bindings

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nsarraycontroller

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sum

I've got a text field value bound to a key path that uses @sum. When the array controller is filtered, the text field updates properly, but extremely slowly, lagging the UI or outright beachballing after every key press (less so as the number of items in arrangedObjects decreases). There is no lag if I don't use @sum; I've narrowed it down to this.

Is there a faster way to do the same thing?

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