OC-NSArray数组的使用Demol

Swift-NSArray数组的使用

我们需要先创建一个auto release pool，才能有效地实现autorelease机制，否则会导致内存泄露。当一个对象obj发送autorelease消息时，会发生如下过程：

仅适用于 NSDictionary , NSArray var response:NSDictionary = [ " Hello " : [ " World " : " Data " ]] println ( JSONData (response). get ( " Hello.World " )) // Data response = [ " Hello " : [[ " A " : " B " ],[ " C " : " D " ]]] println ( JSONData (response). get ( " Hello.0.A " )) // B var sampleArr:NSArray = [[ " A " : " B " ],[ " C " : " D " ]] var json = JSONData (sampleArr) println (json. get (