ruby date 时间星期操作

2.2.2 :036 > Time.now.to_date.beginning_of_week
 => Mon, 02 Nov 2015 
2.2.2 :037 > Time.now.to_date.beginning_of_week.to_time
 => 2015-11-02 00:00:00 +0800 
2.2.2 :038 > Time.now.to_date.beginning_of_week.to_time
 => 2015-11-02 00:00:00 +0800 
2.2.2 :039 > Time.now.to_date.next_week.beginning_of_week.to_time
 => 2015-11-09 00:00:00 +0800 
2.2.2 :040 > Time.now.to_date.end_of_week.beginning_of_week.to_time
 => 2015-11-02 00:00:00 +0800 
2.2.2 :041 > Time.now.to_date.beginning_of_week.to_time
 => 2015-11-02 00:00:00 +0800 
2.2.2 :042 > Time.now.to_date.beginning_of_week=
2.2.2 :043 >   ;
2.2.2 :044 >   
2.2.2 :045 >   
2.2.2 :046 >   
2.2.2 :047 >   ^C
2.2.2 :047 > ^C
2.2.2 :047 > Time.now.to_date.beginning_of_week
 => Mon, 02 Nov 2015 
2.2.2 :048 > Time.now.to_date.beginning_of_week.to_time
 => 2015-11-02 00:00:00 +0800 
2.2.2 :049 > Time.now.to_date.beginning_of_week.to_time
 => 2015-11-02 00:00:00 +0800 
2.2.2 :050 > Time.now.to_date.end_of_week.to_time
 => 2015-11-08 00:00:00 +0800 
2.2.2 :051 > Time.now.to_date.next_week.beginning_of_week.to_time
 => 2015-11-09 00:00:00 +0800 
2.2.2 :052 > Time.now.to_date.prev_week.beginning_of_week.to_time
 => 2015-10-26 00:00:00 +0800 
2.2.2 :053 > 

2.2.2 :033 > Time.now.to_date.cweek
 => 52 
2.2.2 :034 >