Design Patterns Series 20 - Double Buffer, Recycle Bin, and MVC Patterns
In this post we will explore the last three patterns in our design patterns list, Double Buffer Pattern , Recycle Bin Pattern , and Model/View/Controller (MVC) Pattern. Double Buffer Pattern : Double Buffering is used to avoid screen flicker when you are displaying graphics. The idea is that you perfrom your multi-step graphics creation off-screen in a buffer and then flash the results on the screen when they're complete. The process is called Double Buffering because the screen display buffer is one buffer and the buffer in which the images are prepared is the second buffer. Use a Double Buffer when generating revised datasets for an asynchronous processor. When the new data is complete and self consistent, redirect the asynchronous processor to the alternate buffer. Recycle Bin Pattern : If your code uses many objects and the object-creation process is time - and resource - intensive, you might want to use the Recycle Bin Pattern . The idea is that when you're do...