How can I get number of objects in section, NSFetchedResultsController Swift

You need to cast self.fetchedResultsController?.sections to an Array of NSFetchedResultsSectionInfo objects:

if let s = self.fetchedResultsController?.sections as? [NSFetchedResultsSectionInfo]

Then you can pass the section to the subscript and get the number of objects:

if let s = self.fetchedResultsController?.sections as? [NSFetchedResultsSectionInfo] {
    d = s[section].numberOfObjects
}

I think the currently accepted answer by Mike S was pre Swift 2.0

The following is working for me (Swift 2.1):

if let sections = fetchedResultsController?.sections {
    return sections[section].numberOfObjects
} else {
    return 0
}

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