Comparing Dylfish's debouncing, with the one JoeN's second link
I notice the second one does short the capacitor directly to ground when pressing the button. Just opening is delayed by the RC combination.
Does that mean that the first initial contact already discharges the capacitor and the subsequent short bouncing interruptions are too short to effectively recharge it via the resistor ?
Is it correct that a standard pushbutton (NO) only bounces when going open->closed, but closed->open usually does not bounce?
Dylfish's method has delays in both directions, which seems not necessary...
BTW: Time (regarding the initial slope of change) is calculated by R*C ( 1k * 1µF = 1 ms ), which is the easiest part of that topic, for me.