+ modules => [
+ [Digest => 'calculate various message digests (data hashes)', '$hash = sha256_hex($data)'],
+ [Encode => 'character set conversion', 'encode("utf8", decode("iso-8859-1", $octets))'],
+ #[sort => 'control sort() behaviour'],
+ ['List::Util' => 'general-utility list subroutines', '@cards = shuffle 0..51'],
+ ['MIME::Base64' => 'base64 encoded strings as in email attachments'],
+ [open => 'set default PerlIO layers'],
+ ['Test::More' => 'modern framework for unit testing', 'is $got, $expected'],
+ ['Time::HiRes' => 'high resolution timers', '$μs = [gettimeofday]; sleep .1; $elapsed = tv_interval $μs'],
+ ],