JSONMarshaller将 JSON 解析为 NSManagedObject 并观察变化的一种简单方式。许可证: MITObjective CNGBAccountStore一个简单类,用于在密钥链中存储多个账户,包括元数据。 * Store more than one account in the keychain. * Also stores custom metadata. It's as simple as implementing NSCoding. * iCloud keychain support baked in. 许可证: MITObjective C