Elemental questions

Elemental answers

• About constructor call for base and derived class
• Event feed implementation - will it scale?
• Define private to public in C++ [duplicate]
• Settings.Secure.ANDROID_ID is not unique, how to solve?
• Java Best Practice new vs .create() [duplicate]
• How to prevent JSON parser crashing when there are illigal characters in JSON?
• Screen Pixel Resolution in mm
• Android Asynctask: Is inner class necessary?
• Rendering fire in OpenGL
• Are friends in c++ mutual? [duplicate]