How do I get rid of the dock auto-hide delay?

Friends who often use Mac OS x should use the auto-hide feature in the dock, and when you're using the dock to hide automatically, there's probably a half-second delay in hiding and showing the dock, which can affect a small number of friends, how do you get rid of it?

Open Terminal (Applications folder, utilities folder, terminal), and enter the following command:

Defaults write Com.apple.Dock autohide-delay-float 0 && killall Dock.

It's easy, now you go and see if there's a delay?

If you want to restore the default settings, open terminal (Applications folder, utilities folder, terminal) and enter the following command:

Defaults Delete com.apple.Dock autohide-delay && killall Dock.