CCDictionary* dict=CCDictionary::create();
CCString* str1=CCString::create("");
CCString* str2=CCString::create("");
dict->setObject(str1,"key1");
dict->setObject(str2,"key2");
CCString* tempStr=(CCString *)dict->objectForKey("key2");
CCLOG("%s",tempStr->getCString());
CCDictionary就是一个map