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2012-09-27 75 views
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我想取我有救了我的核心數據對象的值,但是我得到這個錯誤閱讀

Use of undeclared identifier 'error' 

這指向的地方,我在refrence &錯誤現貨的代碼下面的和平

// Test listing all FailedBankInfos from the store 
     NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; 
     NSEntityDescription *entity = [NSEntityDescription entityForName:@"Manuf" inManagedObjectContext:context]; 
     [fetchRequest setEntity:entity]; 

NSArray *fetchedObjects = [context executeFetchRequest:fetchRequest error:&error]; 
     for (Manuf *manuf in fetchedObjects) { 

      // Log all of the values in the object 

     } 

任何幫助,將不勝感激

回答

4

您需要申報錯誤喲你傳遞給它在executeFetchRequest中的位置。

像這樣:

NSError *error;