Ruby 时间 to_f函数

Time#to_f() : to_f()是一个时间类的方法，它以浮点数的形式返回自纪元以来的时间值。

语法。Time.to_f()

参数。时间值

返回：时间值为自纪元以来的浮点数，即秒数。

例子 #1 :

# Ruby code for Time.to_f() 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"
  
  
# to_f form 
puts "Time a to_f form : #{a.to_f}\n\n"
puts "Time b to_f form : #{b.to_f}\n\n"
puts "Time c to_f form : #{c.to_f}\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 to_f form : 1546297200.0

Time b to_f form : 1569880800.0

Time c to_f form : 1577746800.0

例子 #2 :

# Ruby code for Time.to_f() 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"
  
  
# to_f form 
puts "Time a to_f form : #{a.to_f}\n\n"
puts "Time b to_f form : #{b.to_f}\n\n"
puts "Time c to_f form : #{c.to_f}\n\n"

输出:

Time a : 2019-08-27 05:33:29 +0200

Time b : 1000-10-10 00:00:00 +0053

Time c : 2020-12-01 00:00:00 +0100



Time a to_f form : 1566876809.577891

Time b to_f form : -30585862408.0

Time c to_f form : 1606777200.0