Suppose I have a variable which can be changed with a slider during runtime - like here. May I detect variable change without creating 'PrevValue' shadow variable?
You could detect mouse clicks on the variables but that would take a while just use a temp varaible.
My site Find someone post count. Click posts under username. Find number of pages. Times that by 40 for min and 60 for max and you have a rough estimate of post count.