Module CCString.Find

type _ pattern

val compile : string ‑> [ `Direct ] pattern

val rcompile : string ‑> [ `Reverse ] pattern

val find : ?⁠start:int ‑> pattern:[ `Direct ] pattern ‑> string ‑> int

Search for pattern in the string, left-to-right.

val rfind : ?⁠start:int ‑> pattern:[ `Reverse ] pattern ‑> string ‑> int

Search for pattern in the string, right-to-left.

Returns the offset of the start of the first match from the right, -1 otherwise.
Parameter start: right-offset in string at which we start.