nostr: impl IntoIterator for Tag

Closes #678

Signed-off-by: Yuki Kishimoto <[email protected]>

CHANGELOG.md

@@ -65,6 +65,7 @@
 * nostr: add `Tags::challenge` method ([Yuki Kishimoto])
 * nostr: add `RelayUrl::is_local_addr` ([Yuki Kishimoto])
 * nostr: add `TagKind::k` constructor ([Yuki Kishimoto]) 
+* nostr: impl `IntoIterator` for `Tag` ([Yuki Kishimoto])
 * database: impl PartialEq and Eq for `Events` ([Yuki Kishimoto])
 * database: add `SaveEventStatus` enum ([Yuki Kishimoto])
 * pool: add `ReceiverStream` ([Yuki Kishimoto])

crates/nostr/src/event/tag/mod.rs

@@ -5,7 +5,7 @@
 //! Tag
 
 use alloc::string::{String, ToString};
-use alloc::vec::Vec;
+use alloc::vec::{IntoIter, Vec};
 #[cfg(not(feature = "std"))]
 use core::cell::OnceCell;
 use core::cmp::Ordering;
@@ -346,6 +346,16 @@ impl Tag {
     }
 }
 
+impl IntoIterator for Tag {
+    type Item = String;
+    type IntoIter = IntoIter<Self::Item>;
+
+    #[inline]
+    fn into_iter(self) -> Self::IntoIter {
+        self.buf.into_iter()
+    }
+}
+
 impl Serialize for Tag {
     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
     where