FailableIterator next() crash

[enamor]

extension FailableIterator {
public func next() -> Element? {
return try! failableNext()
}
}

Thread 1: Fatal error: 'try!' expression unexpectedly raised an error: disk I/O error (code: 10)

[juanjoseluisgarcia]

This occurs when more than one thread is trying to access the DB. This library is not thread-friendly. My suggestion is that you create one global connection (in the AppDelegate for example) and use that connection all over your app.

[avnerbarr]

issue also occurs if the db is open in 2 processes

[nathanfallet]

Merged a fix to replace try! by try?.

[vitock]

Merged a fix to replace try! by try?.

I saw you reverted that change ?

[nathanfallet]

Merged a fix to replace try! by try?.

I saw you reverted that change ?

Yes, because as explained in #1075, you should use failableNext() and handle the error by yourself using a do/catch block. We cannot provide a default behavior (e.g. return nil) when an error occurs, it's up to you to choose what you want to do.