class CI_DB_result result([$type = 'object'])

validation_errors([$prefix = ''[, $suffix = '']])

byte_format($num[, $precision = 1])

load([$file = ''[, $use_sections = FALSE[, $fail_gracefully = FALSE]]])

humanize($str[, $separator = '_'])

mb_substr($str, $start[, $length = NULL[, $encoding = NULL]])

set_error_delimiters([$prefix = ' '[, $suffix = ' ']])

error_array()

or_where($key[, $value = NULL[, $escape = NULL]])

save($id, $data[, $ttl = 60[, $raw = FALSE]])