sig
exception Empty
type 'el t = 'el Heap.t
type 'el heap_el = 'el Heap.heap_el
val heap_el_is_valid : 'el heap_el -> bool
val heap_el_get_el : 'el heap_el -> 'el
val heap_el_get_heap_exn : 'el heap_el -> 'el t
val length : 'el t -> int
val is_empty : 'el t -> bool
val get_cmp : 'el t -> 'el -> 'el -> int
val create : ?min_size:int -> ('el -> 'el -> int) -> 'el t
val of_array : ?min_size:int -> ('el -> 'el -> int) -> 'el array -> 'el t
val copy : 'el t -> 'el t
val mem : 'el t -> 'el -> bool
val heap_el_mem : 'el t -> 'el heap_el -> bool
val find_heap_el_exn : 'el t -> 'el -> 'el heap_el
val top : 'el t -> 'el option
val top_exn : 'el t -> 'el
val top_heap_el : 'el t -> 'el heap_el option
val top_heap_el_exn : 'el t -> 'el heap_el
val iter : 'a t -> f:('a -> unit) -> unit
val pop : 'el t -> 'el option
val pop_exn : 'el t -> 'el
val pop_heap_el : 'el t -> 'el heap_el option
val pop_heap_el_exn : 'el t -> 'el heap_el
val cond_pop : 'el t -> ('el -> bool) -> 'el option
val cond_pop_heap_el : 'el t -> ('el -> bool) -> 'el heap_el option
val push : 'el t -> 'el -> 'el heap_el
val push_heap_el : 'el t -> 'el heap_el -> unit
val remove : 'el heap_el -> unit
val update : 'el heap_el -> 'el -> unit
val check_heap_property : 'el t -> bool
val sexp_of_t : ('el -> Sexplib.Sexp.t) -> 'el t -> Sexplib.Sexp.t
val sexp_of_heap_el :
('el -> Sexplib.Sexp.t) -> 'el heap_el -> Sexplib.Sexp.t
val ounit_tests : unit -> OUnit.test
end