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my $value = ord $byte;
my @values = map { ord } split //, $bytes;

my $value = unpack "C", $byte;
my @values = unpack "C*", $bytes;

my $hex = unpack "H", $byte;
my $hexstring = unpack "H*", $bytes;
my @hex = unpack "H2" x length($bytes), $bytes;

my @hex = ((unpack "H*", $bytes) =~ /(..)/g);