Ruby 时间 round函数

Time#round()是一个时间类方法，它通过对子秒进行四舍五入，返回一个新的时间对象，精度为小数点后的数字。

语法。Time.round()

参数。时间值

返回：一个新的时间对象，通过对子秒进行四舍五入，达到给定的小数位精度。

例子 #1 :

# Ruby code for Time.round() method
  
# loading library
require 'time'
  
# declaring time 
a = Time.new(2019)
  
# declaring time
b = Time.new(2019, 10)
  
# declaring time
c = Time.new(2019, 12, 31)
  
# Time 
puts "Time a : #{a}\n\n"
puts "Time b : #{b}\n\n"
puts "Time c : #{c}\n\n\n\n"
  
  
# round form 
puts "Time a round form : #{a.round(10)}\n\n"
puts "Time b round form : #{b.round(3)}\n\n"
puts "Time c round form : #{c.round}\n\n"

输出:

Time a : 2019-01-01 00:00:00 +0100

Time b : 2019-10-01 00:00:00 +0200

Time c : 2019-12-31 00:00:00 +0100



Time a round form : 2019-01-01 00:00:00 +0100

Time b round form : 2019-10-01 00:00:00 +0200

Time c round form : 2019-12-31 00:00:00 +0100

例子 #2 :

# Ruby code for Time.round() method
  
# Ruby code for Time.round() method
  
# loading library
require 'time'
  
# declaring time 
a = Time.now
  
# declaring time
b = Time.new(1000, 10, 10)
  
# declaring time
c = Time.new(2020, 12)
  
# Time 
puts "Time a : #{a}\n\n"
puts "Time b : #{b}\n\n"
puts "Time c : #{c}\n\n\n\n"
  
  
# round form 
puts "Time a round form : #{a.round(10)}\n\n"
puts "Time b round form : #{b.round(3)}\n\n"
puts "Time c round form : #{c.round}\n\n"

输出:

Time a : 2019-08-28 07:11:47 +0000

Time b : 1000-10-10 00:00:00 +0000

Time c : 2020-12-01 00:00:00 +0000



Time a round form : 2019-08-28 07:11:47 +0000

Time b round form : 1000-10-10 00:00:00 +0000

Time c round form : 2020-12-01 00:00:00 +0000