Batteries user guide : BatString.Cap.Exceptionless

`sig
val to_int : [> `Read ] BatString.Cap.t -> int option
val to_float : [> `Read ] BatString.Cap.t -> float option
val index : [> `Read ] BatString.Cap.t -> char -> int option
val rindex : [> `Read ] BatString.Cap.t -> char -> int option
val index_from : [> `Read ] BatString.Cap.t -> int -> char -> int option
val rindex_from : [> `Read ] BatString.Cap.t -> int -> char -> int option
val find :
[> `Read ] BatString.Cap.t -> [> `Read ] BatString.Cap.t -> int option
val find_from :
[> `Read ] BatString.Cap.t ->
int -> [> `Read ] BatString.Cap.t -> int option
val rfind :
[> `Read ] BatString.Cap.t -> [> `Read ] BatString.Cap.t -> int option
val rfind_from :
[> `Read ] BatString.Cap.t ->
int -> [> `Read ] BatString.Cap.t -> int option
val split :
[> `Read ] BatString.Cap.t ->
by:[> `Read ] BatString.Cap.t ->
('a BatString.Cap.t * 'b BatString.Cap.t) option
val rsplit :
[> `Read ] BatString.Cap.t ->
by:[> `Read ] BatString.Cap.t ->
('a BatString.Cap.t * 'b BatString.Cap.t) option
end`