From: Rob Pike <r@golang.org>
Date: Mon, 21 Jul 2008 23:18:04 +0000 (-0700)
Subject: map delete
X-Git-Tag: weekly.2009-11-06~3449
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=777ee7163bba96f2c9b3dfe135d8ad4ab837c062;p=gostls13.git

map delete

SVN=128258
---

diff --git a/doc/go_lang.txt b/doc/go_lang.txt
index d73c67aaf0..1770db54e2 100644
--- a/doc/go_lang.txt
+++ b/doc/go_lang.txt
@@ -1609,6 +1609,12 @@ the value is assigned and the second, boolean variable is set to true. Otherwise
 the variable is unchanged, and the boolean value is set to false.
   
   value, present = map_var[key]
+
+To delete a value from a map, use a tuple assignment with the map on the left
+and a false boolean expression as the second expression on the right, such
+as:
+
+  map_var[key] = value, false
     
 In assignments, the type of the expression must match the type of the left-hand side.