persistent-storage

问题 For example, when I execute frozen = frozenset(('kay', 'snow queen')) , then tuple(frozen) , I get ('kay', 'snow queen') . (When / how) is it possible, if ever, for iter(frozen) to produce the items in a different order? (When / how) will tuple(frozen) return ('snow queen', 'kay') ? I am using Python 3 almost all of the time, but I would also be curious about Python 2. 回答1: By default, the hash values of str objects are salted with an unpredictable random value. Although they remain constant

问题 I have a BlackBerry application that starts (App load) with a Registration screen when the App is first installed. Later, the App will load with the home screen. Registration screen only appears on first load. I am achieving this by storing a boolean value in PersistentStore . If the value exists, then Registration screen will not appear. PersistentStoreHelper.persistentHashtable.put("flagged",Boolean.TRUE); PersistentStoreHelper.persistentObject.commit(); UiApplication.getUiApplication()

问题 I have a BlackBerry application that starts (App load) with a Registration screen when the App is first installed. Later, the App will load with the home screen. Registration screen only appears on first load. I am achieving this by storing a boolean value in PersistentStore . If the value exists, then Registration screen will not appear. PersistentStoreHelper.persistentHashtable.put("flagged",Boolean.TRUE); PersistentStoreHelper.persistentObject.commit(); UiApplication.getUiApplication()

问题 I have a BlackBerry application that starts (App load) with a Registration screen when the App is first installed. Later, the App will load with the home screen. Registration screen only appears on first load. I am achieving this by storing a boolean value in PersistentStore . If the value exists, then Registration screen will not appear. PersistentStoreHelper.persistentHashtable.put("flagged",Boolean.TRUE); PersistentStoreHelper.persistentObject.commit(); UiApplication.getUiApplication()

问题 Maybe the title of the question is not very self-explanatory but I don't know how to summ it up. I'm finishing an App which is basically a DB. I will ship a DB within the App. Everything works well but now I came to the problem. When the App is installed, it needs to create the database on the device. So, I dragged the DB to the "Supporting Files" folder in my Xcode project (still Xcode 4.1, by the way). I went to the AppDelegate.m file and looked for the (NSPersistentStoreCoordinator *

问题 I'm trying to migrate a typical single node LAMP stack with prestashop inside to kubernetes on Google Cloud Platform . So far i've: Setted up the database as an independent second generation Cloud SQL. Dockerized and uploaded a custom version of Prestashop with Apache and PHP. Setted up the deployment deployment including the SQL proxy, and Ingress to expose the service. This works, and I would leave it this way if It wouldn't make it so difficult to deploy any changes that have any kind of

问题 I am writing an iOS app in Swift and the app collects user input from multiple app screens and in the last screen its supposed to POST the information collected to the server via API. Now my question is, what is the best way to manage the collected data on the app? Should I use plist to save my form data ? It also has one image which I want to upload to my server from the final screen. How should I go about this? PS: I also read about http://developer.apple.com/CoreData, but I'm not sure if

问题 I have an application that will need extremely little persistent storage. Realistically, we're talking about < 30 integers. All the application needs is to know those integers on next startup (and the integers do change as it runs). A database is overkill for this, but I don't particularly want to just use a text file either. Does C# have any mechanism for persisting small values like this between runs? I've noticed you can store things in resource files and some other places - I don't know

问题 I have an application that will need extremely little persistent storage. Realistically, we're talking about < 30 integers. All the application needs is to know those integers on next startup (and the integers do change as it runs). A database is overkill for this, but I don't particularly want to just use a text file either. Does C# have any mechanism for persisting small values like this between runs? I've noticed you can store things in resource files and some other places - I don't know

问题 I have this code which works well: static { myStore = PersistentStore.getPersistentObject(MY_LONG_KEY); myList = (Vector) myStore.getContents(); if (_storedStations == null) { myList = new Vector(4); // prepopulate with fake data myList.addElement(new MyItem("Eins")); myList.addElement(new MyItem("Zwei")); myList.addElement(new MyItem("Drei")); myList.addElement(new MyItem("Vier")); myStore.setContents(myList); } } class MyItem implements Persistable { ..... } probably because the