box-o-sand/cli/filehandles.pl

#!/usr/bin/env perl
use strict;
use warnings;
use IO::File;
use Data::Dumper;

open(my $fh, '<', 'foo.txt');

my @lines = <$fh>;

print Data::Dumper->Dump([\@lines], [qw(lines)]);


open(my $fh2, '<', 'foo.txt');

while(my $line = <$fh2>) {
    print $line;
}


my $fh3 = IO::File->new('foo.txt', 'r');

while(my $line = $fh3->getline()) {
    print $line;
}


my $fh4 = IO::File->new('foo.txt', 'r');
my @lines4 = $fh4->getlines();

print @lines4;
print Data::Dumper->Dump([\@lines4], [qw(lines)]);


1;
__END__