为什么不用CoreData

查看https://github.com/Mantle/Mantle这个框架的时候看到这样一句话

Core Data solves certain problems very well. If you need to execute complex queries across your data, handle a huge object graph with lots of relationships, or support undo and redo, Core Data is an excellent fit.

Core Data 非常好的解决了某些问题，如果你需要复杂的查询来遍历数据，处理有大量关联的对象图，或者支持撤销和重做，那么Core Data就很适合。