val (~/) : string ‑> t
create_exn
val (=~) : string ‑> t ‑> bool
input =~ pattern an infix alias of matches
input =~ pattern
matches
val (//~) : string ‑> t ‑> string Core_kernel.Or_error.t
input //~ pattern an infix alias of find_first *
input //~ pattern
find_first
val (//~!) : string ‑> t ‑> string