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📜  核心数据保存 - Swift 代码示例

📅  最后修改于: 2022-03-11 15:00:58.994000             🧑  作者: Mango

代码示例1
if let contex = (UIApplication.shared.delegate as? AppDelegate)?.persistentContainer.viewContext {}
(UIApplication.shared.delegate as? AppDelegate)?.
// saving context
(UIApplication.shared.delegate as? AppDelegate)?.saveContext()

  if let context = (UIApplication.shared.delegate as? AppDelegate)?.persistentContainer.viewContext {