From 8c38dfd537eba8947d2397b9e3f4a56bdb0647fe Mon Sep 17 00:00:00 2001
From: Steve Klabnik <steve@steveklabnik.com>
Date: Thu, 30 Apr 2015 13:55:03 -0400
Subject: Describe (a,) vs (a) in docs

Fixes #24730
---
 src/doc/trpl/primitive-types.md | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'src/doc/trpl')

diff --git a/src/doc/trpl/primitive-types.md b/src/doc/trpl/primitive-types.md
index aca6e327c3b..e017e222c74 100644
--- a/src/doc/trpl/primitive-types.md
+++ b/src/doc/trpl/primitive-types.md
@@ -248,6 +248,14 @@ or “breaks up” the tuple, and assigns the bits to three bindings.
 
 This pattern is very powerful, and we’ll see it repeated more later.
 
+You can disambiguate a single-element tuple from a value in parentheses with a
+comma:
+
+```
+(0,); // single-element tuple
+(0); // zero in parentheses
+```
+
 ## Tuple Indexing
 
 You can also access fields of a tuple with indexing syntax:
-- 
cgit 1.4.1-3-g733a5