如果输入文件中提供的日期距离“今天”大于一天,我将尝试输出“不好”。
当test.txt包含以下数据时,使用“ ./code.sh 当我重新散列下面的代码以尝试将“今天的日期”用作变量,并且在输入文件中只有一个日期时,出现以下错误: 工作代码(输入文件中有两个日期): 破损代码(输入文件中有一个日期): 不太确定我在做什么错... 感谢您的任何帮助07/02/2020 08/02/2020
Use of uninitialized value in concatenation (.) or string at code.sh line 27, <> line 1
#!/usr/bin/perl
use strict;
use warnings;
use Time::Piece;
#my $date = localtime->strftime('%d/%m/%Y');
#print "$date";
my $format = '%d/%m/%Y';
while (<>) {
chomp;
my ($str1, $str2) = split;
# my ($date, $str2) = split;
# my $dt1 = Time::Piece->strptime($date, $format);
my $dt1 = Time::Piece->strptime($str1, $format);
my $dt2 = Time::Piece->strptime($str2, $format);
# print "$date / $str2 ";
print "$str1 / $str2 ";
if ($dt2->julian_day - $dt1->julian_day ==1) {
print "ok\n";
} else {
print "not ok\n";
}
}
#!/usr/bin/perl
use strict;
use warnings;
use Time::Piece;
my $date = localtime->strftime('%d/%m/%Y');
print "$date";
my $format = '%d/%m/%Y';
while (<>) {
chomp;
# my ($str1, $str2) = split;
my ($date, $str2) = split;
my $dt1 = Time::Piece->strptime($date, $format);
# my $dt1 = Time::Piece->strptime($str1, $format);
my $dt2 = Time::Piece->strptime($str2, $format);
print "$date / $str2 ";
# print "$str1 / $str2 ";
if ($dt2->julian_day - $dt1->julian_day ==1) {
print "ok\n";
} else {
print "not ok\n";
}
}
[输入代码时请多加注意,示例中有一些未输入的类型
#!/usr/bin/perl
#
# vim: ai:ts=4:sw=4
#
use strict;
use warnings;
use feature 'say';
use Time::Piece;
my $format = '%d/%m/%Y';
my $date = localtime->strftime($format);
say "Today is: $date\n";
my @str_dates = <DATA>;
chomp(@str_dates);
my $date1 = Time::Piece->strptime($str_dates[0], $format);
my $date2 = Time::Piece->strptime($str_dates[1], $format);
my $days_diff = $date2->julian_day - $date1->julian_day;
my $msg = ($days_diff == 1) ? "ok" :"not ok";
say "$date2 :: $date1 => $msg";
say "$date2 :: $date1 = $days_diff day(s) apart";
__DATA__
07/02/2020
08/02/2020
输出
Today is: 07/02/2020
Sat Feb 8 00:00:00 2020 :: Fri Feb 7 00:00:00 2020 => ok
Sat Feb 8 00:00:00 2020 :: Fri Feb 7 00:00:00 2020 = 1 day(s) apart
注意:如果您使用,我会建议:
vim最好与选项一起使用:语法,ai,ts = 4,sw = 4