這篇文章主要介紹了Ruby中處理時間的一些基本操作,主要是利用到了Ruby中強大的Time模塊,需要的朋友可以參考下
獲取當前日期和 2 3 4 5 6 7 8 9 #!/usr/bin/ruby -w time1 = Time.new puts "Current Time : " + time1.inspect # Time.now is a synonym: time2 = Time.now puts "Current Time : " + time2.inspect
這將產生以下結果：
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1 2 Current Time : Mon Jun 02 12:02:39 -0700 2008 Current Time : Mon Jun 02 12:02:39 -0700 2008獲取組件的日期和時間：
我們可以用 Time 對象來獲取日期和時間的各個組成部分。下面的例子顯示相同的：
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 #!/usr/bin/ruby -w time = Time.new # Components of a Time puts "Current Time : " + time.inspect puts time.year # => Year of the date puts time.month # => Month of the date (1 to 12) puts time.day # => Day of the date (1 to 31 ) puts time.wday # => 0: Day of week: 0 is Sunday puts time.yday # => 365: Day of year puts time.hour # => 23: 24-hour clock puts time.min # => 59 puts time.sec # => 59 puts time.usec # => 999999: microseconds puts time.zone # => "UTC": timezone name這將產生以下結果：
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1 2 3 4 5 6 7 8 9 10 11 Current Time : Mon Jun 02 12:03:08 -0700 2008 2008 6 2 1 154 12 3 8 247476 UTCTime.utc，Time.gm和Time.local函數：
可用於這兩個函數以標准格式來格式化日期如下：
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1 2 3 4 5 6 7 8 # July 8, 2008 Time.local(2008, 7, 8) # July 8, 2008, 09:10am, local time Time.local(2008, 7, 8, 9, 10) # July 8, 2008, 09:10 UTC Time.utc(2008, 7, 8, 9, 10) # July 8, 2008, 09:10:11 GMT (same as UTC) Time.gm(2008, 7, 8, 9, 10, 11)下面的例子，在一個數組來獲取所有組件按以下格式：
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1 [sec,min,hour,day,month,year,wday,yday,isdst,zone]嘗試以下操作：
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1 2 3 4 5 6 #!/usr/bin/ruby -w time = Time.new values = time.to_a p values這將產生以下結果：
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1 [26, 10, 12, 2, 6, 2008, 1, 154, false, "MST"]這個數組可以傳遞給Time.utc或Time.local函數得到不同的日期格式如下：
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1 2 3 4 5 6 #!/usr/bin/ruby -w time = Time.new values = time.to_a puts Time.utc(*values)這將產生以下結果：
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1 Mon Jun 02 12:15:36 UTC 2008跟隨著的方式來獲得內部表示(依賴於平台)歷元以來的秒數時間：
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1 2 3 4 5 6 7 8 # Returns number of seconds since epoch time = Time.now.to_i # Convert number of seconds into Time object. Time.at(time) # Returns second since epoch which includes microseconds time = Time.now.to_f時區和夏令時：
可以使用一個 Time 對象來獲取相關的所有信息的時區和夏令如下：
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1 2 3 4 5 6 7 8 9 10 11 12 time = Time.new # Here is the interpretation time.zone # => "UTC": return the timezone time.utc_offset # => 0: UTC is 0 seconds offset from UTC time.zone # => "PST" (or whatever your timezone is) time.isdst # => false: If UTC does not have DST. time.utc? # => true: if t is in UTC time zone time.localtime # Convert to local timezone. time.gmtime # Convert back to UTC. time.getlocal # Return a new Time object in local zone time.getutc # Return a new Time object in UTC格式化時間和日期：
有各種各樣的方式來格式化日期和時間。下面是一個例子，說明幾個：
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1 2 3 4 5 6 7 #!/usr/bin/ruby -w time = Time.new puts time.to_s puts time.ctime puts time.localtime puts time.strftime("%Y-%m-%d %H:%M:%S")這將產生以下結果：
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1 2 3 4 Mon Jun 02 12:35:19 -0700 2008 Mon Jun 2 12:35:19 2008 Mon Jun 02 12:35:19 -0700 2008 2008-06-02 12:35:19時間算術：
可以在時間上做簡單的算術如下：
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1 2 3 4 5 6 7 8 9 10 11 now = Time.now # Current time puts now past = now - 10 # 10 seconds ago. Time - number => Time puts past future = now + 10 # 10 seconds from now Time + number => Time puts future diff = future - now # => 10 Time - Time => number of seconds puts diff這將產生以下結果：
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1 2 3 4 Thu Aug 01 20:57:05 -0700 2013 Thu Aug 01 20:56:55 -0700 2013 Thu Aug 01 20:57:15 -0700 2013 10.0
