feat(chain): make output of SpkTxOutIndex::unused_spks cloneable

evanlinjin · evanlinjin · commit 705690ee8fdd · 2024-01-13T20:07:02.000+08:00
This allows us to pass this to chain sources without calling
`Iterator::collect` first.
diff --git a/crates/chain/src/spk_txout_index.rs b/crates/chain/src/spk_txout_index.rs
@@ -215,7 +215,7 @@ impl<I: Clone + Ord> SpkTxOutIndex<I> {
     /// let unused_change_spks =
     ///     txout_index.unused_spks((change_index, u32::MIN)..(change_index, u32::MAX));
     /// ```
-    pub fn unused_spks<R>(&self, range: R) -> impl DoubleEndedIterator<Item = (&I, &Script)>
+    pub fn unused_spks<R>(&self, range: R) -> impl DoubleEndedIterator<Item = (&I, &Script)> + Clone
     where
         R: RangeBounds<I>,
     {

Original file line number	Diff line number	Diff line change
`@@ -215,7 +215,7 @@ impl<I: Clone + Ord> SpkTxOutIndex<I> {`
`215`	`215`	`/// let unused_change_spks =`
`216`	`216`	`/// txout_index.unused_spks((change_index, u32::MIN)..(change_index, u32::MAX));`
`217`	`217`	/// ```
`218`		`- pub fn unused_spks<R>(&self, range: R) -> impl DoubleEndedIterator<Item = (&I, &Script)>`
	`218`	`+ pub fn unused_spks<R>(&self, range: R) -> impl DoubleEndedIterator<Item = (&I, &Script)> + Clone`
`219`	`219`	`where`
`220`	`220`	`R: RangeBounds<I>,`
`221`	`221`	`{`