Question

I tried to convert a string to date in perl, but get error.

use strict; 
use warnings;  
use DateTime;  
use Date::Manip;

my $date = ParseDate("20111121");
print "today is ".$date->day_of_week."\n"; 

error

Can't call method "day_of_week" without a package or object reference 

Looks like the package import has problem …

Thanks

Answer 1

DateTime doesn’t parse dates. I’d go for the Time::Piece core module that gives you strptime():

#!/usr/bin/env perl
use strict;
use warnings;
use Time::Piece;
my $t = Time::Piece->strptime("20111121", "%Y%m%d");
print $t->strftime("%w\n");