title: Do methods ending with _! have a special meaning in Scala?
body: <p>Do methods ending with <code>_!</code> such as <code>delete_!</code> or <code>i_is_!</code> have a special meaning? Are they "just names"? Do they follow some convention? There's even <code>bulkDelete_!!</code>. (The specific context is Lift if it makes a difference.)</p>