Re: Compare two dates

2 minor comments on your code

if ($d2 >= $1) {
[download]

i guess $1 is a typo.

print "\n $d2 is greater or equal to  $d1\n";
[download]

your print statements are equal.

one recommended module on CPAN is DateTime

from the DateTime docs:

DateTime->compare( $dt1, $dt2 )
[download]

Compare two DateTime objects. The semantics are compatible with Perl's sort() function; it returns -1 if $d1 < $d2, 0 if $d1 == $d2, 1 if $d1 > $d2.

use strict;
use warnings;
use feature 'say';
use DateTime;

my $d1 = DateTime->new(
    year      => 2019,
    month     => 8,
    day       => 1,
    time_zone => 'America/Chicago',
);

my $d2 = DateTime->new(
    year      => 2019,
    month     => 6,
    day       => 8,
    time_zone => 'America/Chicago',
);
[download]

~~say DateTime->compare( $d1, $d2 )~~

say DateTime->compare( $d1, $d2 ) > 0
    ? $d1->ymd .' is greater than ' . $d2->ymd 
    : $d2->ymd .' is greater or equal to ' . $d1->ymd;
[download]

update: sorry, my fault <no excuse>

Comment on Re: Compare two dates Select or Download Code

Replies are listed 'Best First'.
Re^2: Compare two dates by AnomalousMonk (Archbishop) on Jul 22, 2019 at 20:24 UTC
your print statements are equal. There still seems to be a problem with the print statement because: `c:\@Work\Perl\monks>perl -wMstrict -le "use feature 'say'; use DateTime; my $d1 = DateTime->new( year => 1999, month => 8, day => 1, time_zone => 'America/Chicago', ); my $d2 = DateTime->new( year => 2019, month => 6, day => 8, time_zone => 'America/Chicago', ); say DateTime->compare( $d1, $d2 ) ? $d1->ymd .' is greater than ' . $d2->ymd : $d2->ymd .' is greater or equal to ' . $d1->ymd; " 1999-08-01 is greater than 2019-06-08` [download] Maybe something like: c:\@Work\Perl\monks>perl -wMstrict -le "use feature 'say'; use DateTime; my $d1 = DateTime->new( year => 1999, month => 8, day => 1, time_zone => 'America/Chicago', ); my $d2 = DateTime->new( year => 2019, month => 6, day => 8, time_zone => 'America/Chicago', ); ;; my $comparison = DateTime->compare($d1, $d2); $comparison = $comparison > 0 ? 'greater than' : $comparison < 0 ? 'less than' : 'equal to'; ;; say sprintf '%s is %s %s', $d1->ymd, $comparison, $d2->ymd; " 1999-08-01 is less than 2019-06-08 [download] Give a man a fish: `<%-{-{-{-<`	[reply] [d/l] [select]
Re^2: Compare two dates by soonix (Canon) on Jul 22, 2019 at 21:40 UTC
This The semantics are compatible with Perl's sort() function; it returns -1 if $dt1 < $dt2, 0 if $dt1 == $dt2, 1 if $dt1 > $dt2. is not compatible with your code `say DateTime->compare( $d1, $d2 ) ? $d1->ymd .' is greater than ' . $d2->ymd : $d2->ymd .' is greater or equal to ' . $d1->ymd;` [download] Better would be e.g. `say $d1->ymd . ' is ' . ('earlier than', 'equal to', 'later than')[Dat +eTime->compare( $d1, $d2 ) + 1] . ' ' . $d2->ymd;` [download]	[reply] [d/l] [select]


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