How to calculate the difference between two timestamp strings in Perl

Question

I searched through all the possible questions but couldn\'t find the answer, so can Perl experts help me on this one?

I have two timestamps like 05/25/2011 05:

Answer 1

I recommend that you use the Time::Piece module. It has been a core module since the release of version 9.5 of Perl 5, so it shouldn't need installing.

This code demonstrates

use strict;
use warnings;

use Time::Piece;

my $str1 = 'Execution started at 05/25/2011 05:22:03 PM';
my $str2 = 'Execution completed at 05/25/2011 05:34:08 PM';

my @times = map Time::Piece->strptime(/(\d.+M)/, '%m/%d/%Y %H:%M:%S %p'), $str1, $str2;

my $delta = $times[1] - $times[0];
print $delta->pretty;

output

12 minutes, 5 seconds