我希望返回给定日期的下一个星期一的日期。如果给定日期已经是星期一,则日期应保持不变。
在另一篇文章中,我发现了一个脚本,使用DateTime来计算给定日期的上一个星期一。
use DateTime;
my $date = DateTime->new(year => 2011, month => 6, day => 11);
my $desired_dow = 1; # Monday
$date->subtract(days => ($date->day_of_week - $desired_dow) % 7);
print "$date\n";
(归功于cjm)
我根本无法找到如何修改这个以便计算下一个星期一(而不是前一个星期一)。 有人可以帮忙吗?
答案 0 :(得分:2)
更改
$date->subtract(days => ($date->day_of_week - $desired_dow) % 7);
到
$date->add(days => ($desired_dow - $date->day_of_week) % 7);
或者您可以选择只为您的“旧”星期一添加一周:
$date->subtract(days => ($date->day_of_week - $desired_dow) % 7);
$date->add(days => 7);
答案 1 :(得分:0)
#!/usr/bin/perl
use strict;
use warnings;
use Time::Local;
use POSIX 'strftime';
my $date = shift || die "No date given\n\n\tUsage: ./test.pl 2017-07-17, please note the format, CCYY-MM-DD\n\n";
my @date = split /-/, $date;
$date[0] -= 1900;
$date[1]--;
die "Invalid date: $date\n" unless @date == 3;
my $now = &timelocal(0, 0, 12, reverse @date);
do{
$now += 24 * 60 * 60;
#}while ((strftime('%u', localtime $now) != 1) && (strftime('%u', localtime $now) != 5) && (strftime('%u', localtime $now) != 3)); ## For Multiple days, in case you want to find either, next monday, friday or wednesday
}while (&strftime('%u', localtime $now) != 1); #Values should be from 1 to 7, including...
my @array_of_time = localtime($now);
my $formatted_time = &strftime( "%Y%m%d", @array_of_time );
print ("Next Monday-[$formatted_time]\n");
答案 2 :(得分:0)
在我看来,接受的答案(add
部分)是不正确的。
这就是我使用的:
my $date = DateTime->now;
my $current_dow = $date->day_of_week;
my $desired_dow = 1; # Monday
$date->add( days => 7 - $current_dow + $desired_dow );