---

yaml
---
r: 101715
b: refs/heads/master
c: 0f5baad
h: refs/heads/master
i:
  101713: 2f34543
  101711: d210063
v: v3

Author: nikomatsakis

[refs]

@@ -1,5 +1,5 @@
 ---
-refs/heads/master: 6f571a63a6e966ae59e0d078542c04734eba58ac
+refs/heads/master: 0f5baad6ee5191991d18271aabebaf3fc6124424
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
 refs/heads/snap-stage3: 6e7f170fedd3c526a643c0b2d13863acd982be02
 refs/heads/try: a97642026c18a624ff6ea01075dd9550f8ed07ff

trunk/src/doc/guide-container.md

@@ -181,19 +181,25 @@ never call its underlying iterator again once `None` has been returned:
 ~~~
 let xs = [1,2,3,4,5];
 let mut calls = 0;
-let it = xs.iter().scan((), |_, x| {
-    calls += 1;
-    if *x < 3 { Some(x) } else { None }});
-// the iterator will only yield 1 and 2 before returning None
-// If we were to call it 5 times, calls would end up as 5, despite only 2 values
-// being yielded (and therefore 3 unique calls being made). The fuse() adaptor
-// can fix this.
-let mut it = it.fuse();
-it.next();
-it.next();
-it.next();
-it.next();
-it.next();
+
+{
+    let it = xs.iter().scan((), |_, x| {
+        calls += 1;
+        if *x < 3 { Some(x) } else { None }});
+        
+    // the iterator will only yield 1 and 2 before returning None
+    // If we were to call it 5 times, calls would end up as 5, despite
+    // only 2 values being yielded (and therefore 3 unique calls being
+    // made). The fuse() adaptor can fix this.
+    
+    let mut it = it.fuse();
+    it.next();
+    it.next();
+    it.next();
+    it.next();
+    it.next();
+}
+
 assert_eq!(calls, 3);
 ~~~