Double Clicks and Touch Enabled Devices

What is the best way to emulate double clicks on a touch enabled device? Is there an easy way to tie together a double tap with a double click?

Should I just create different user interaction such as - solely drag and drop or button click? Should I not even bother looking for a way to detect a double tap and tie it to a double click event?

Is it bad practice to even use double click user interactions? This is a general question but could use specific examples of double click implementations in a application that is usable on a touch device.