úÎ/ ü     portablejmillikin@gmail.comIA list-like type for lazy sequences which might terminate with an error. 8Standard lists can be converted to failable lists using  Prelude.foldr Next Done. Like the standard   function. Like the standard  function. Like the standard  function. Like the standard ( function, but the mapping function may  return an error. Like the standard  function. Like the standard " function, but accepting an extra  parameter to handle  items. Like the standard $ function, but errors will return a   value. Like the standard Data.List.unfoldr! function, but the step function  may return an error. Like the standard  function;  and  are  considered 0-length.             failable-list-0.2Data.FailableList FailableListFailDoneNextnullappendmap mapEither concatMapfoldrfoldlunfoldrlengthbaseGHC.ListGHC.Base++ Data.EitherLefthead'tail'