package containers
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type _ pattern
val compile : string -> [ `Direct ] pattern
val rcompile : string -> [ `Reverse ] pattern
val find : ?start:int -> pattern:[ `Direct ] pattern -> string -> int

find ~start ~pattern s searches for pattern in the string s, left-to-right.

  • returns

    the offset of the first match, -1 otherwise.

  • parameter start

    offset in string at which we start.

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

rfind ~start ~pattern s searches for pattern in the string s, 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.