#import "GLAppDelegate.h" #import "EAGLView.h" @implementation GLAppDelegate @synthesize window @synthesize glView - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

ios开发中的一个例子，Foundation框架－NSDictionary-Foundation NSDictionary

一个很好用的json数据解析工具，直接解析成NSDictionary或NSArray-A good use of json data analysis tool directly parsed into NSDictionary or NSArray

一个自定义的字典类别，增加一个排序数组，可以对内容按照添加的顺序进行排序(A custom dictionary category that adds an array of sorts that can be sorted in order of the added order)