MySQL: how to index an “OR” clause
I’m executing the following query
composite
Constraint to prevent violation of FK constraint in a third table
I can implement the constraints that I want in stored procs, but I’m wondering if I can define a set of foreign key constraints which will do the job.
How to clear the canvas for redrawing
After experimenting with composite operations and drawing images on the canvas I’m now trying to remove images and compositing. How do I do this?
Why is video tearing such a problem in Linux?
I’ve used many variants of Linux(mostly Debian derivatives) for over a decade now. One problem that I haven’t seen solved satisfactorily is the issue of horizontal tearing, or Vsync not being properly implemented.