From b1409799f8b8cb355b71493d0724dc158aac9bec Mon Sep 17 00:00:00 2001
From: Xavier Noria <fxn@hashref.com>
Date: Tue, 22 Sep 2009 09:57:55 +0200
Subject: AS guide: documents String#at

---
 railties/guides/source/active_support_overview.textile | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'railties/guides')

diff --git a/railties/guides/source/active_support_overview.textile b/railties/guides/source/active_support_overview.textile
index d8f6b31a65..ca4d952c10 100644
--- a/railties/guides/source/active_support_overview.textile
+++ b/railties/guides/source/active_support_overview.textile
@@ -737,6 +737,19 @@ Ruby 1.8.7 and up define the iterator +String#each_char+ that understands UTF8 a
 "\xE6\x97\xA5\xE6\x9C\xAC\xE8\xAA\x9E".each_char {|c| print c} # => 日本語
 </ruby>
 
+h4. Access
+
+h5. +at(position)+
+
+Returns the character of the string at position +position+:
+
+<ruby>
+"hello".at(0)  # => "h"
+"hello".at(4)  # => "o"
+"hello".at(-1) # => "o"
+"hello".at(10) # => nil
+</ruby>
+
 h3. Extensions to +Numeric+
 
 ...
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