类型'NSPersistentStore‘的值永远不可能为零，不允许进行比较

Question

let managedModel:NSManagedObjectModel = NSManagedObjectModel.mergedModelFromBundles(nil)!


        var storeCoordinator:NSPersistentStoreCoordinator = NSPersistentStoreCoordinator(managedObjectModel: managedModel)

        if storeCoordinator.addPersistentStoreWithType(NSSQLiteStoreType, configuration: nil, URL: url, options: nil) != nil{
            if error != nil{
                print(error!.localizedDescription)
                abort()
            }
        }

如何用最新的swift2语法修复它？

谢谢

类型'NSPersistentStore‘的值永远不可能为零，不允许进行比较 调用可以抛出，但它没有被标记为“try”，错误也不会被处理。

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Answer 1

我就是这样用Swift 2来处理的：

let managedModel:NSManagedObjectModel = NSManagedObjectModel.mergedModelFromBundles(nil)!
var storeCoordinator:NSPersistentStoreCoordinator = NSPersistentStoreCoordinator(managedObjectModel: managedModel)

do {
    try storeCoordinator.addPersistentStoreWithType(NSSQLiteStoreType, configuration: nil, URL: url, options: nil)
} catch let error as NSError {
    print(error!.localizedDescription)
    abort()
}