Pairing_heap.Eltval sexp_of_t : ('a -> Sexplib0.Sexp.t) -> 'a t -> Sexplib0.Sexp.tval value : 'a t -> 'a optionvalue t returns the value in the heap controlled by this token if the value is still in the heap, and None otherwise.
val value_exn : 'a t -> 'avalue_exn t returns the value in the heap controlled by this token if the value is still in the heap, and raises otherwise.