---

yaml
---
r: 163166
b: refs/heads/snap-stage3
c: 5ba7c5d
h: refs/heads/master
v: v3

Author: bluss

[refs]

@@ -1,7 +1,7 @@
 ---
 refs/heads/master: 9146a919b616e39e528e4d7100d16eef52f1f852
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
-refs/heads/snap-stage3: d7d5ccf9bb3bc63f347d8d5441092f20a3fe7088
+refs/heads/snap-stage3: 5ba7c5da62bae732bf466191dbeb5f699ba44d70
 refs/heads/try: 20cbbffeefc1f35e2ea63afce7b42fbd79611d42
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/dist-snap: ba4081a5a8573875fed17545846f6f6902c8ba8d

branches/snap-stage3/src/libcollections/string.rs

@@ -729,6 +729,15 @@ impl FromIterator<char> for String {
     }
 }
 
+#[experimental = "waiting on FromIterator stabilization"]
+impl<'a> FromIterator<&'a str> for String {
+    fn from_iter<I:Iterator<&'a str>>(iterator: I) -> String {
+        let mut buf = String::new();
+        buf.extend(iterator);
+        buf
+    }
+}
+
 #[experimental = "waiting on Extend stabilization"]
 impl Extend<char> for String {
     fn extend<I:Iterator<char>>(&mut self, mut iterator: I) {
@@ -740,6 +749,18 @@ impl Extend<char> for String {
     }
 }
 
+#[experimental = "waiting on Extend stabilization"]
+impl<'a> Extend<&'a str> for String {
+    fn extend<I: Iterator<&'a str>>(&mut self, mut iterator: I) {
+        // A guess that at least one byte per iterator element will be needed.
+        let (lower_bound, _) = iterator.size_hint();
+        self.reserve(lower_bound);
+        for s in iterator {
+            self.push_str(s)
+        }
+    }
+}
+
 impl PartialEq for String {
     #[inline]
     fn eq(&self, other: &String) -> bool { PartialEq::eq(&**self, &**other) }