clear_data()

class CI_Migration current()

cache_on()

set_select($field[, $value = ''[, $default = FALSE]])

is_loaded($class)

dbprefix([$table = ''])

row([$n = 0[, $type = 'object']])

octal_permissions($perms)

has_rule($field)

class CI_Calendar initialize([$config = array()])