The lexicographic order supported by the provided order. There is no constraint on the relative lengths of the lists.
Returns true if and only if the given lists have the same length and content with respect to the given equality function.
If all elements of the given list are Some _ then Some xs is returned with the xs being the contents of those Somes, with order preserved. Otherwise return None.
let r1, r2 = map2_prefix f l1 l2 If l1 is of length n and l2 = h2 @ t2 with h2 of length n, r1 is List.map2 f l1 h1 and r2 is t2.
split_at n l returns the pair before, after where before is the n first elements of l and after the remaining ones. If l has less than n elements, raises Invalid_argument.
Returns true if and only if the given list, with respect to the given equality function on list members, is a prefix of the list of_.
val find_and_chop_longest_common_prefix :
equal:('a -> 'a -> bool) ->
first:'a list ->
second:'a list ->
'a longest_common_prefix_resultReturns the longest list that, with respect to the provided equality function, is a prefix of both of the given lists. The input lists, each with such longest common prefix removed, are also returned.