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module CCMixtbl: sig .. end

Hash Table with Heterogeneous Keys

From https://github.com/mjambon/mixtbl (thanks to him). Example:

   let inj_int = CCMixtbl.create_inj () ;;
   let tbl = CCMixtbl.create 10 ;;
   OUnit.assert_equal None (CCMixtbl.get ~inj:inj_int tbl "a");;
   CCMixtbl.set inj_int tbl "a" 1;;
   OUnit.assert_equal (Some 1) (CCMixtbl.get ~inj:inj_int tbl "a");;
   let inj_string = CCMixtbl.create_inj () ;;
   CCMixtbl.set inj_string tbl "b" "Hello";
   OUnit.assert_equal (Some "Hello") (CCMixtbl.get inj_string tbl "b");;
   OUnit.assert_equal None (CCMixtbl.get inj_string tbl "a");;
   OUnit.assert_equal (Some 1) (CCMixtbl.get inj_int tbl "a");;
   CCMixtbl.set inj_string tbl "a" "Bye";;
   OUnit.assert_equal None (CCMixtbl.get inj_int tbl "a");;
   OUnit.assert_equal (Some "Bye") (CCMixtbl.get inj_string tbl "a");;
  

Since 0.6

type 'a t 

A hash table containing values of different types. The type parameter 'a represents the type of the keys.

type 'b injection 

An accessor for values of type 'b in any table. Values put in the table using a key can only be retrieved using this very same key.

val create : int -> 'a t 

create n creates a hash table of initial size n.

val create_inj : unit -> 'b injection 

Return a value that works for a given type of values. This function is normally called once for each type of value. Several keys may be created for the same type, but a value set with a given setter can only be retrieved with the matching getter. The same key can be reused across multiple tables (although not in a thread-safe way).

val get : inj:'b injection -> 'a t -> 'a -> 'b option

Get the value corresponding to this key, if it exists and belongs to the same key

val set : inj:'b injection -> 'a t -> 'a -> 'b -> unit

Bind the key to the value, using inj

val find : inj:'b injection -> 'a t -> 'a -> 'b

Find the value for the given key, which must be of the right type.
Raises Not_found if either the key is not found, or if its value doesn't belong to the right type

val length : 'a t -> int

Number of bindings

val clear : 'a t -> unit

Clear content of the hashtable

val remove : 'a t -> 'a -> unit

Remove the binding for this key

val copy : 'a t -> 'a t 

Copy of the table

val mem : inj:'b injection -> 'a t -> 'a -> bool

Is the given key in the table, with the right type?

val iter_keys : 'a t -> ('a -> unit) -> unit

Iterate on the keys of this table

val fold_keys : 'a t -> 'b -> ('b -> 'a -> 'b) -> 'b

Fold over the keys

type 'a sequence = ('a -> unit) -> unit 

val keys_seq : 'a t -> 'a sequence 

All the keys

val bindings_of : inj:'b injection -> 'a t -> ('a * 'b) sequence 

All the bindings that come from the corresponding injection

type value = 

val bindings : 'a t -> ('a * value) sequence 

Iterate on all bindings