On Nov 2, 2011, at 4:31 AM, Igor Mozolevsky wrote:

> the compiler has
> no clue what you intend to do with `ref' of type `CGImageRef'. What
> bridging does is it tells the compiler to stop worrying because _you_
> have taken over the management of the type


You're focussing on the wrong part of my question. I understand perfectly why I 
have to cast to __bridge id. I *like* casting to __bridge id. 

What I wasn't understanding is why I *didn't* have to cast to __bridge id in 
the first two cases I listed. And, since Apple's own example, with no casting, 
does not compile, I was left with *no* official documentation as to what I 
should do in those cases. I discovered by experimentation that I could get away 
with casting to id alone, and I was concerned with whether that was a correct 
solution. Now I've been told that it is. I thought it probably was, and I 
thought I could probably guess why, but I wanted to check. Now I have.

> Are you saying that because someone at Apple was being sloppy in
> writing that sample code and, as it transpires, hasn't fixed that
> mis-type yet, the document is invalidated as a whole?


No. I was not saying anything about validity of anything. I was asking about 
the specific cases I'm asking about. You're the one who keeps elevating it to 
some sort of global warfare. Rather unhelpfully, I might add. m.

--
matt neuburg, phd = m...@tidbits.com, http://www.apeth.net/matt/
pantes anthropoi tou eidenai oregontai phusei
Among the 2007 MacTech Top 25, http://tinyurl.com/2rh4pf
Programming iOS 4! http://www.apeth.net/matt/default.html#iosbook
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TidBITS, Mac news and reviews since 1990, http://www.tidbits.com


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