1 files changed, 7 insertions, 7 deletions
diff --git a/ivy.ml b/ivy.ml
index f031252..d12ae6f 100644
--- a/ivy.ml
+++ b/ivy.ml
@@ -55,21 +55,21 @@ let hexa_code = fun c ->
 
 let hexa_of_string = fun s ->
   let n = String.length s in
-  let h = String.create (n*2) in
+  let h = Bytes.create (n*2) in
   for i = 0 to n - 1 do
     let c = Char.code s.[i] in
-    h.[2*i] <- hexa_char (c lsr 4);
-    h.[2*i+1] <- hexa_char (c land 0xf)
+    Bytes.set h (2*i) (hexa_char (c lsr 4));
+    Bytes.set h (2*i+1) (hexa_char (c land 0xf))
   done;
-  h
+  Bytes.to_string h
 
 let string_of_hexa = fun h ->
   let n = String.length h / 2 in
-  let s = String.create n in
+  let s = Bytes.create n in
   for i = 0 to n - 1 do
-    s.[i] <- Char.chr (hexa_code h.[2*i] lsl 4 + hexa_code h.[2*i+1])
+    Bytes.set s i (Char.chr (hexa_code h.[2*i] lsl 4 + hexa_code h.[2*i+1]))
   done;
-  s
+  Bytes.to_string s
 
 
 let send_data = fun tag value ->