From e1b6823b7c8daf5a6742ab41cc9bdc585c994bf8 Mon Sep 17 00:00:00 2001
From: Daniele Alessandri <suppakilla@gmail.com>
Date: Sun, 18 Jul 2010 21:00:27 +0800
Subject: Create an Hash#key alias for Hash#index (Ruby < 1.9)

---
 lib/ipaddress/extensions/extensions.rb | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'lib')

diff --git a/lib/ipaddress/extensions/extensions.rb b/lib/ipaddress/extensions/extensions.rb
index 0d70bda..a474e18 100644
--- a/lib/ipaddress/extensions/extensions.rb
+++ b/lib/ipaddress/extensions/extensions.rb
@@ -2,6 +2,12 @@ class << Math
   def log2(n); log(n) / log(2); end
 end
 
+if RUBY_VERSION =~ /1\.8/
+    class Hash
+        alias :key :index
+    end
+end
+
 class Integer
   def power_of_2?
     Math::log2(self).to_i == Math::log2(self)
-- 
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