From b5cb8284ba502cbd5d80f35f5ec892496468f4ff Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby-lang.org>
Date: Thu, 27 Mar 2014 14:35:07 +0900
Subject: Enumerable#zip to use enumerator if mruby-enumerator gem is available

---
 mrbgems/mruby-enumerator/mrblib/enumerator.rb | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/mrbgems/mruby-enumerator/mrblib/enumerator.rb b/mrbgems/mruby-enumerator/mrblib/enumerator.rb
index 17a650d6c..1494c02c5 100644
--- a/mrbgems/mruby-enumerator/mrblib/enumerator.rb
+++ b/mrbgems/mruby-enumerator/mrblib/enumerator.rb
@@ -607,3 +607,28 @@ module Kernel
   end
   alias :enum_for :to_enum
 end
+
+module Enumerable
+  # use Enumerator to use inifite sequence
+  def zip(*arg)
+    ary = []
+    arg = arg.map{|a|a.each}
+    i = 0
+    self.each do |*val|
+      a = []
+      a.push(val.__svalue)
+      idx = 0
+      while idx < arg.size
+        begin
+          a.push(arg[idx].next)
+        rescue StopIteration
+          a.push(nil)
+        end
+        idx += 1
+      end
+      ary.push(a)
+      i += 1
+    end
+    ary
+  end
+end
-- 
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