pub fn skip(&mut self) {
        // Pick a new card.
        self.pick_card();
        // Update the scheduler.
        self.update();
    }
/// Skip the current card in this session.
///
/// This intentionally orphans the card, so that the card is only recovered when `mu` is
/// restarted.
Skip the current card in this session.
This intentionally orphans the card, so that the card is only recovered when `mu` is
restarted.
Skip the current card in this session . This intentionally orphans the card so that the card is only recovered when ` mu ` is restarted .
pub fn skip(&mut self) {
        // Pick a new card.
        self.pick_card();
        // Update the scheduler.
        self.update();
    }
pub fn skip ( & mut self ) { // Pick a new card. self . pick_card ( ) ; // Update the scheduler. self . update ( ) ; }
Skip the current card in this session.
Skip the current card in this session .
&mut self
&mut self