小编Atz*_*mon的帖子

我试图在Xcode中自动创建NSManagedObject子类(2个相关实体).它们是这样生成的:

但是,在我做任何进一步操作之前,当我尝试构建并运行它时,会发生链接错误,如下所示:

duplicate symbol _OBJC_CLASS_$_Photo in: /Users/Kefeng/Library/Developer/Xcode/DerivedData/Photomania-aellrakjngugnzcgrleiytvrfvyt/Build/Intermediates/Photomania.build/Debug-iphonesimulator/Photomania.build/Objects-normal/x86_64/Photo+CoreDataClass.o duplicate symbol _OBJC_METACLASS_$_Photo in: /Users/Kefeng/Library/Developer/Xcode/DerivedData/Photomania-aellrakjngugnzcgrleiytvrfvyt/Build/Intermediates/Photomania.build/Debug-iphonesimulator/Photomania.build/Objects-normal/x86_64/Photo+CoreDataClass.o duplicate symbol _OBJC_CLASS_$_Photography in: /Users/Kefeng/Library/Developer/Xcode/DerivedData/Photomania-aellrakjngugnzcgrleiytvrfvyt/Build/Intermediates/Photomania.build/Debug-iphonesimulator/Photomania.build/Objects-normal/x86_64/Photography+CoreDataClass.o duplicate symbol _OBJC_METACLASS_$_Photography in: /Users/Kefeng/Library/Developer/Xcode/DerivedData/Photomania-aellrakjngugnzcgrleiytvrfvyt/Build/Intermediates/Photomania.build/Debug-iphonesimulator/Photomania.build/Objects-normal/x86_64/Photography+CoreDataClass.o ld: 4 duplicate symbols for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation)

我曾多次尝试创建新项目并做同样的事情.我的初衷是将一些自定义方法添加到子类中.但是当我添加任何东西时,例如Photo+CoreData.h/m,出现与上面相同的错误.

我找到了一些关于"双重包含"或"将文件保存到错误的目录"的答案,但我没有这样做.有人对此有任何想法吗？

我有一个从雅虎财经抓取的股票数据，调整后的收盘数据不知何故是错误的。

            adj_close    close     ratio
date                                    
2014-10-16   240.4076  2466.40  0.097473
2014-10-17   245.8173  2521.90  0.097473
2014-10-20   250.4522  2569.45  0.097473
2014-10-21   251.8850  2584.15  0.097473
2014-10-22   251.0175  2575.25  0.097473
2014-10-23   251.3392  2578.55  0.097473
2014-10-27   253.2155  2597.80  0.097473
2014-10-28   258.9616  2656.75  0.097473
2014-10-29   257.6944  2643.75  0.097473
2014-10-30   257.1339  2638.00  0.097473
2014-10-31    26.3450  2702.80  0.009747
2014-11-03    26.5463  2723.45  0.009747
2014-11-05    27.1160  2781.90  0.009747
2014-11-07    26.7320  2742.50  0.009747
2014-11-10    26.7027  2739.50  0.009747

以下是调整后的收盘数据图：

如何使用插值等方法替换这样的数据？