From b1c5c26c6885588a14b39250a729fe7a7356db6c Mon Sep 17 00:00:00 2001
From: androm3da <brian.cain@gmail.com>
Date: Wed, 25 Nov 2015 12:46:35 -0600
Subject: [PATCH 1/3] Updated "while let" example.

---
 src/doc/book/if-let.md | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/doc/book/if-let.md b/src/doc/book/if-let.md
index faa922acb3d..c4f21bf3781 100644
--- a/src/doc/book/if-let.md
+++ b/src/doc/book/if-let.md
@@ -58,7 +58,8 @@ if let Some(x) = option {
 ## `while let`
 
 In a similar fashion, `while let` can be used when you want to conditionally
-loop as long as a value matches a certain pattern. It turns code like this:
+loop over an iterator as long as a value matches a certain pattern. It turns 
+code like this:
 
 ```rust
 # let option: Option<i32> = None;
@@ -73,8 +74,9 @@ loop {
 Into code like this:
 
 ```rust
-# let option: Option<i32> = None;
-while let Some(x) = option {
+# let v: vec![1, 3, 5, 7, 9, ];
+# let mut it: v.iter();
+while let Some(x) = it.next() {
     println!("{}", x);
 }
 ```

From 465a5cb19435a495ce5d6e868b2699c908190bec Mon Sep 17 00:00:00 2001
From: ebadf <brian.cain@gmail.com>
Date: Wed, 25 Nov 2015 20:05:45 -0600
Subject: [PATCH 2/3] Corrections to the while-let example per review.

---
 src/doc/book/if-let.md | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/src/doc/book/if-let.md b/src/doc/book/if-let.md
index c4f21bf3781..dfe6f5ca5fc 100644
--- a/src/doc/book/if-let.md
+++ b/src/doc/book/if-let.md
@@ -58,8 +58,7 @@ if let Some(x) = option {
 ## `while let`
 
 In a similar fashion, `while let` can be used when you want to conditionally
-loop over an iterator as long as a value matches a certain pattern. It turns 
-code like this:
+loop  as long as a value matches a certain pattern. It turns code like this:
 
 ```rust
 # let option: Option<i32> = None;
@@ -74,9 +73,9 @@ loop {
 Into code like this:
 
 ```rust
-# let v: vec![1, 3, 5, 7, 9, ];
-# let mut it: v.iter();
-while let Some(x) = it.next() {
+let v: vec![1, 3, 5, 7, 11, ];
+let mut iter: v.iter();
+while let Some(x) = iter.next() {
     println!("{}", x);
 }
 ```

From 797a0bd1c13175398aa0e2e45f6dbb61bcb8c329 Mon Sep 17 00:00:00 2001
From: ebadf <brian.cain@gmail.com>
Date: Fri, 27 Nov 2015 10:23:58 -0600
Subject: [PATCH 3/3] Shifted focus of while-let example per review.

---
 src/doc/book/if-let.md | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/src/doc/book/if-let.md b/src/doc/book/if-let.md
index dfe6f5ca5fc..9afe5fa826d 100644
--- a/src/doc/book/if-let.md
+++ b/src/doc/book/if-let.md
@@ -61,10 +61,10 @@ In a similar fashion, `while let` can be used when you want to conditionally
 loop  as long as a value matches a certain pattern. It turns code like this:
 
 ```rust
-# let option: Option<i32> = None;
+let mut v = vec![1, 3, 5, 7, 11];
 loop {
-    match option {
-        Some(x) => println!("{}", x),
+    match v.pop() {
+        Some(x) =>  println!("{}", x),
         None => break,
     }
 }
@@ -73,9 +73,8 @@ loop {
 Into code like this:
 
 ```rust
-let v: vec![1, 3, 5, 7, 11, ];
-let mut iter: v.iter();
-while let Some(x) = iter.next() {
+let mut v = vec![1, 3, 5, 7, 11];
+while let Some(x) = v.pop() {
     println!("{}", x);
 }
 ```