Ruby Date friday?用法及代碼示例

Date＃friday？()是Date類方法，它檢查日期是否為星期五。

用法：Date.friday?()

參數：日期值

返回：true-如果日期是星期五，否則返回false

範例1：

# Ruby code for Date.friday?() method 
  
# loading date 
require 'date'
  
# declaring Date  
a = Date.new(2019, 1, 1) 
  
# declaring Date 
b = Date.jd(2452004) 
  
# declaring Date 
c = Date.ordinal(2019, 12) 
  
# Date  
puts "Date a:#{a}\n\n"
puts "Date b:#{b}\n\n"
puts "Date c:#{c}\n\n\n\n"
  
# friday? form  
puts "Date a friday? form:#{a.friday?}\n\n"
puts "Date b friday? form:#{b.friday?}\n\n"
puts "Date c friday? form:#{c.friday?}\n\n"

輸出：

Date a:2019-01-01

Date b:2001-04-04

Date c:2019-01-12



Date a friday? form:false

Date b friday? form:false

Date c friday? form:false

範例2：

# Ruby code for Date.friday?() method 
  
# loading date 
require 'date'
  
# declaring Date  
a = Date.parse('2019-01-01') 
  
# declaring Date 
b = Date.strptime('03-12-2019', '%d-%m-%Y') 
  
# declaring Date 
c = Date.commercial(2019, 5, 6) 
  
# Date  
puts "Date a:#{a}\n\n"
puts "Date b:#{b}\n\n"
puts "Date c:#{c}\n\n\n\n"
  
# friday? form  
puts "Date a friday? form:#{a.friday?}\n\n"
puts "Date b friday? form:#{b.friday?}\n\n"
puts "Date c friday? form:#{c.friday?}\n\n"

輸出：

Date a:2019-01-01

Date b:2019-12-03

Date c:2019-02-02



Date a friday? form:false

Date b friday? form:false

Date c friday? form:false

相關用法

注：本文由純淨天空篩選整理自Kirti_Mangal大神的英文原創作品 Ruby | Date friday? function。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。