- var _time_list: Array[Couple[Int, WakeUpNode]] = new Array[Couple[Int, WakeUpNode]]
- var _time: Int = 0 # What time is it ?
+ var time_list: Array[Couple[Int, WakeUpNode]] = new Array[Couple[Int, WakeUpNode]]
+ var time: Int = 0 # What time is it ?