Exposed is_list and list_length. Updated is_list and list_length to handle circular lists. Prevent "(let x 5)" from causing a seg. fault in Linux. Removed some excess whitespace.
Exposed is_list and list_length. Updated is_list and list_length to handle
circular lists. Prevent "(let x 5)" from causing a seg. fault in Linux.
Removed some excess whitespace.


shortsightedsid/playground,shortsightedsid/playground