example iterator method

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/wasm/wasm.rs b/wasm/wasm.rs
index 347ec4b30779ad82a98dbfb138b251a475551cc9..539224067f03bff2effb2749f63b6ebfb43c779d 100644 (file)
--- a/wasm/wasm.rs
+++ b/wasm/wasm.rs
@@ -14,3 +14,8 @@ const X : &'static str = "invalid value passed to wasm";
 pub fn mutable(s: String) -> ZCoordIterator {
   ZCoordIterator(ZCoord::from_str(&s).ok_or(X)?.clone_mut())
 }
+
+#[wasm_bindgen]
+impl ZCoordIterator {
+  pub fn next(&mut self) -> () { }
+}