On Jul 4, 2012, at 8:13 PM, Graham Cox wrote:

> 
> On 04/07/2012, at 3:50 PM, Roland King wrote:
> 
>> Put 'NSComparisonResult' after = and before ^ to declare the return value of 
>> the block in the code below. 
> 
> 
> That didn't work, but after a few more wild guesses, I stumbled on the 
> correct form:
> 
>       NSComparisonResult (^comp)( id<DKStorableObject>, id<DKStorableObject> 
> ) = ^NSComparisonResult( id<DKStorableObject> a, id<DKStorableObject> b )

Sorry 'bout that Graham, I was writing it on the bus and proved that indeed the 
syntax is a beast and I didn't remember it either, and I went through this 
myself just a few days back. I sort of understand the explanation by Ken 
Thomas, although I never really gelled with the C function pointer syntax and 
always had to look that up. Not sure whether that last little wrinkle, the ^ 
before the return type when you declare one, is easily explained by anything. 
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