Hi there, I'm trying out the module IO::File and one thing confuses me: how do I properly close the file? The IO::File synopsis section demonstrates two ways to close the file either with:

use IO::File;
my $fh = IO::File->new('foo', 'r');
# do something with $fh
undef $fh;
[download]

or with:

# continuing from above
$fh->close;
[download]

Coming from python background, the second method fits better in my brain, but I'm not sure if this is the correct way especially since the $fh variable is still defined:

# The output is something like IO::File=GLOB(yadda yadda)
print "$fh" if defined $fh;
[download]

Somewhat related, I tried this code to get a list of lines from a file:

my @lines = IO::File->new('foo')->getlines;
[download]

It's very convenient, but this isn't mentioned anywhere in the doc and I'm not sure whether this has any negative side effects.

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