From d3c787a94f2b66f337334e71634b1c80a359f0bd Mon Sep 17 00:00:00 2001
From: Thiago Carvalho <thiago.carvalho@westwing.de>
Date: Fri, 6 Feb 2015 15:36:31 +0100
Subject: [PATCH] Book Compound Data Types update

From Issue 21829 clarify equivalency of tuples
---
 src/doc/trpl/compound-data-types.md | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/doc/trpl/compound-data-types.md b/src/doc/trpl/compound-data-types.md
index 901b44661b04c..aaa016f5a2519 100644
--- a/src/doc/trpl/compound-data-types.md
+++ b/src/doc/trpl/compound-data-types.md
@@ -72,6 +72,20 @@ if x == y {
 
 This will print `no`, because some of the values aren't equal.
 
+Note that the order of the values is considered when checking for equality,
+so the following example will also print `no`.
+
+```rust
+let x = (1, 2, 3);
+let y = (2, 1, 3);
+
+if x == y {
+    println!("yes");
+} else {
+    println!("no");
+}
+```
+
 One other use of tuples is to return multiple values from a function:
 
 ```rust