pub(super) fn move_prev(&mut self) {
    if self.rear.is_empty() {
      self.rearrange(1);
    }
    let val = self.rear.pop().unwrap();
    self.front.push(val);
  }
/// Sets the current element to the previous element.
Sets the current element to the previous element.
Sets the current element to the previous element .
pub(super) fn move_prev(&mut self) {
    if self.rear.is_empty() {
      self.rearrange(1);
    }
    let val = self.rear.pop().unwrap();
    self.front.push(val);
  }
pub ( super ) fn move_prev ( & mut self ) { if self . rear . is_empty ( ) { self . rearrange ( 1 ) ; } let val = self . rear . pop ( ) . unwrap ( ) ; self . front . push ( val ) ; }
Sets the current element to the previous element.
Sets the current element to the previous element .
&mut self
&mut self