drop.swift

public func drop() throws {
    guard let store = self.persistentStoreCoordinator.persistentStores.last, storeURL = store.URL, storePath = storeURL.path
        else { throw NSError(info: "Persistent store coordinator not found", previousError: nil) }

    let sqliteFile = (storePath as NSString).stringByDeletingPathExtension
    let fileManager = NSFileManager.defaultManager()

    self._writerContext = nil
    self._mainContext = nil
    self._persistentStoreCoordinator = nil

    let shm = sqliteFile + ".sqlite-shm"
    if fileManager.fileExistsAtPath(shm) {
        do {
            try fileManager.removeItemAtURL(NSURL.fileURLWithPath(shm))
        } catch let error as NSError {
            throw NSError(info: "Could not delete persistent store shm", previousError: error)
        }
    }

    let wal = sqliteFile + ".sqlite-wal"
    if fileManager.fileExistsAtPath(wal) {
        do {
            try fileManager.removeItemAtURL(NSURL.fileURLWithPath(wal))
        } catch let error as NSError {
            throw NSError(info: "Could not delete persistent store wal", previousError: error)
        }
    }

    if fileManager.fileExistsAtPath(storePath) {
        do {
            try fileManager.removeItemAtURL(storeURL)
        } catch let error as NSError {
            throw NSError(info: "Could not delete sqlite file", previousError: error)
        }
    }
}

Shouldn't this iterate? https://gist.github.com/3lvis/5514cb6ecd2291a9c998c0380ae0ed08#file-drop-swift-L2

Good point!

I'l going to check that out

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