Ppxlib_traverse_builtins.iter
method int : int T.iter
method string : string T.iter
method bool : bool T.iter
method char : char T.iter
method option : 'a. 'a T.iter -> 'a option T.iter
method list : 'a. 'a T.iter -> 'a list T.iter
method array : 'a. 'a T.iter -> 'a array T.iter