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bugfix in CCFQueue.add_seq_front

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This commit is contained in:
Simon Cruanes 2015-03-21 16:10:48 +01:00
parent c1313e094d
commit 4b409ca34f
1 changed files with 10 additions and 7 deletions
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17
src/data/CCFQueue.ml
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@ -290,9 +290,15 @@ let tail q =
*)
let add_seq_front seq q =
let q = ref q in
seq (fun x -> q := cons x !q);
!q
let l = ref [] in
(* reversed seq *)
seq (fun x -> l := x :: !l);
List.fold_left (fun q x -> cons x q) q !l
(*$Q
Q.(pair (list int) (list int)) (fun (l1, l2) -> \
add_seq_front (Sequence.of_list l1) (of_list l2) |> to_list = l1 @ l2)
*)
let add_seq_back q seq =
let q = ref q in
@ -377,10 +383,7 @@ let to_list q =
to_seq q (fun x -> l := x :: !l);
List.rev !l
let of_seq seq =
let l = ref [] in
seq (fun x -> l := x :: !l);
List.fold_left (fun q x -> cons x q) empty !l
let of_seq seq = add_seq_front seq empty
(*$Q
(Q.list Q.int) (fun l -> \