From ef17231bd776b266f1fe3132bde0fb6bbef90257 Mon Sep 17 00:00:00 2001
From: Yukihiro Matsumoto <matz@ruby-lang.org>
Date: Sat, 15 Sep 2012 15:04:51 +0900
Subject: Integer#step added

---
 mrblib/numeric.rb | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/mrblib/numeric.rb b/mrblib/numeric.rb
index c1b6b39c0..1d701b1fc 100644
--- a/mrblib/numeric.rb
+++ b/mrblib/numeric.rb
@@ -1,6 +1,6 @@
 ##
 # Integer
-#  
+#
 # ISO 15.2.8
 class Integer
 
@@ -44,6 +44,19 @@ class Integer
     end
     self
   end
+
+  ##
+  # Calls the given block from +self+ to +num+
+  # incremented by +step+ (default 1).
+  #
+  def step(num, step=1, &block)
+    i = if num.kind_of? Float then self.to_f else self end
+    while(i <= num)
+      block.call(i)
+      i += step
+    end
+    self
+  end
 end
 
 ##
-- 
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