auto merge of #7015 : huonw/rust/each-fn-kill, r=thestinger

Continuation of #6995/#6999.

1 files changed, 2 insertions, 1 deletions

diff --git a/doc/tutorial-tasks.md b/doc/tutorial-tasks.md
index 2f150755fc2..892908dc0a0 100644
--- a/doc/tutorial-tasks.md
+++ b/doc/tutorial-tasks.md
@@ -351,10 +351,11 @@ a single large vector of floats. Each task needs the full vector to perform its
 # use std::vec;
 # use std::uint;
 # use std::rand;
+# use std::iterator::IteratorUtil;
 use extra::arc::ARC;
 
 fn pnorm(nums: &~[float], p: uint) -> float {
-    (vec::foldl(0.0, *nums, |a,b| a+(*b).pow(p as float) )).pow(1f / (p as float))
+    nums.iter().fold(0.0, |a,b| a+(*b).pow(p as float) ).pow(1f / (p as float))
 }
 
 fn main() {