屬性用copy馋吗、strong修飾的區(qū)別:
http://blog.csdn.net/runintolove/article/details/50767523
關(guān)鍵字copy與mutableCopy的詳解:
http://www.reibang.com/p/700f58eb0b86
屬性用copy馋吗、strong修飾的區(qū)別:
http://blog.csdn.net/runintolove/article/details/50767523
關(guān)鍵字copy與mutableCopy的詳解:
http://www.reibang.com/p/700f58eb0b86