205****071 2021-12-14 18:42 北宋:开发者_Python百科景德元宝此钱真品无疑，品相差点，10年前值几元钱，现在值几十元
I have an iPhone app that stores some settings using NSUserDefault standardUserDefaults. When I add new features to the app I need to add new defaul开发者_开发百科t settings and so I have to migrate/
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