I’m struggling a little with understanding the meaning and use of the __unused modifier, or, perhaps the meaning of an unused variable.
If the modifier is not used in the example in the callbacks chapter, for the fetchConn and timer objects, we get a compiler warning saying they are unused variables…
What does it it mean that they are ‘unused’ ? … in the sense that the timer does fire every two seconds and the NSURLConnection *fetchConn connection is made and the process of fetching data begins immediately … so doesn’t mean that they are being ‘used’?
So if they are being used why does the compiler think they are not ?
And if they are not being used …what is the definition of a variable being used?
Thanks for any help