from(iterable) -> Array
{Object} - an array like object with a length property.
{Array} -
include(a, item, array) -> Boolean
{} -
{Object} - an item that is matched with ==
{Object} -
{Boolean} -
is(array) -> Boolean
{Object} - a possible array object
{Boolean} -
to_json(array, nested) -> undefined
{Object} -
{Object} -