"Tn X-10n" writes:

a string is a list of Char which can be '1', '0', '/n' and spaces ' '. ["1 0 1 0 0 1 /n"]

...so why not start with a converter from Char to Bool, and build String -> [Bool] from that, and finally [String] -> [[Bool]]? -kzm -- If I haven't seen further, it is by standing in the footprints of giants