core-data

相关标签：javascript jquery android 多少钱 iPhone

Core Data information in application

I have an app that I\'m building where it has some data built into it that is contained in a core data data model.When I run the app to the simulator, the data is there and everything is peachy.[详细]

2023-04-09 10:33 分类：问答
NSPredicate filter for many-to-many-to-many relationships

I\'m still fairly new to using NSPredicate, but I\'ve got a somewhat complica开发者_运维技巧ted issue and I\'m not quite sure the best way to go about a solution.[详细]

2023-04-09 09:18 分类：问答
xcdatamodel Contents Disappears

I\'ve had this happen a few times. The contents of proj.xcdatamodeld/proj.xcdatamodel/ randomly disappear off my hard drive. However, Xcode will open the model file just fine.[详细]

2023-04-09 09:08 分类：问答
Core Data Model change app update

I would like to update my app, but I have completely changed the data structure, so is th开发者_运维知识库e Core Data model entirely different. Now, the data in the app does not have to be preserved,[详细]

2023-04-09 07:40 分类：问答
What does iOS do when an app is "Installing" and is it possible to programmatically control it?

I understand it may be unpacking some sort of compressed package into the file system (and due to the mobile nature I suppose it may be quite aggressive compression to reduce download time). But does[详细]

2023-04-09 07:14 分类：问答
What should I replace Core Data with? [closed]

Closed. This question is seeking recommendations for books, tools, software libraries, and more. It does not meet Stack Overflow guidelines. It is not currently accepting answers.[详细]

2023-04-09 07:02 分类：问答
Adding new attributes in existing coredata model

I am a newbie to coredata never worked with it, right now, I am working on a project on which some work has already been done by the previous developer. Coredata is开发者_Python百科 being used in savi[详细]

2023-04-09 06:18 分类：问答
How to do perfect KVO for NSManagedObject?

Pe开发者_如何学JAVArfect KVO here includes two parts: add observer correctly and remove observer correctly.[详细]

2023-04-09 05:07 分类：问答
Sorting based on one of many related entities

Entity B (Book) has a one-to-many relationship with the entity D (Description). The idea is that a book has different descriptions for different languages.[详细]

2023-04-09 02:07 分类：问答
how to prevent misuse of bool's in Core Data (i.e. forgetting to put "boolValue" to convert from NSNumber)

I still muck up wi开发者_如何学Cth bool\'s in my core data config data.The NSManagedObject for say a core data \"config\" class one can quickly type in the following and you don\'t get an error:[详细]

2023-04-08 22:30 分类：问答