From 1ab86305c15fe0ab080282e83b07e24ebb0f0bb7 Mon Sep 17 00:00:00 2001
From: Martin Braun <martin.braun@ettus.com>
Date: Fri, 2 Nov 2018 15:20:29 -0700
Subject: coding guidelines: Add .at() vs [] comment

---
 CODING.md | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'CODING.md')

diff --git a/CODING.md b/CODING.md
index 774e7d079..7b2dda931 100644
--- a/CODING.md
+++ b/CODING.md
@@ -84,6 +84,11 @@ Date:   Tue Nov 22 16:19:38 2016 -0800
     Reviewed-By: Martin Braun <martin.braun@ettus.com>
 ```
 
+* Prefer `.at()` over `[]` for maps and vectors. Keep in mind that `[]` will
+  invoke a default constructor of the value type, whereas `.at()` will throw
+  an exception if the index doesn't exist -- which is usually the desired
+  behaviour.
+
 
 ## Boost-specific Guidelines
 
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