val get : inj:'a Dolmen_std__Hmap.injection -> key -> t -> 'a optionval add : inj:'a Dolmen_std__Hmap.injection -> key -> 'a -> t -> tval find : inj:'a Dolmen_std__Hmap.injection -> key -> t -> 'aval remove : key -> t -> tval mem : inj:'a Dolmen_std__Hmap.injection -> key -> t -> boolval iter_keys : f:( key -> unit ) -> t -> unitval fold_keys : f:( 'a -> key -> 'a ) -> x:'a -> t -> 'atype !'a iter = ( 'a -> unit ) -> unitval bindings_of : inj:'a Dolmen_std__Hmap.injection -> t -> (key * 'a) iter