Method record

examples/mpk.rs:163–178

(&mut self, success: bool)

        self.next
    }
    fn record(&mut self, success: bool) {
        if !success {
            self.growing = false
        }
        let diff = if self.growing {
            (self.next - self.last) * 2
        } else {
            (self.next - self.last + 1) / 2
        };
        if success {
            self.last = self.next;
            self.next = self.next + diff;
        } else {
            self.next = self.next - diff;
        }
    }
    fn done(&self) -> bool {
        self.last == self.next
    }