From bbe0268163b95c147df1cc894ea8f9e8211a7930 Mon Sep 17 00:00:00 2001
From: Chris Ward <chriswhward@gmail.com>
Date: Mon, 12 Nov 2018 12:06:59 +0100
Subject: Add mapping guide to style docs thanks to @aupiff

---
 docs/style-guide.rst | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

(limited to 'docs')

diff --git a/docs/style-guide.rst b/docs/style-guide.rst
index 7b48ccad..68fee871 100644
--- a/docs/style-guide.rst
+++ b/docs/style-guide.rst
@@ -809,7 +809,23 @@ possible permutations for function declarations.
 Mappings
 ========
 
-TODO
+In variable declarations, do not separate the keyword ``mapping`` from its
+type by a space. Do not separate any nested ``mapping`` keyword from its type by
+whitespace.
+
+Yes::
+
+    mapping(uint => uint) map;
+    mapping(address => bool) registeredAddresses;
+    mapping(uint => mapping(bool => Data[])) public data;
+    mapping(uint => mapping(uint => s)) data;
+
+No::
+
+    mapping (uint => uint) map;
+    mapping( address => bool ) registeredAddresses;
+    mapping (uint => mapping (bool => Data[])) public data;
+    mapping(uint => mapping (uint => s)) data;
 
 Variable Declarations
 =====================
-- 
cgit