Integralist · May 26, 2014 06:01 · May 26, 2014
diff --git a/Pass block with zero arity.md b/Pass block with zero arity.md
@@ -0,0 +1,20 @@
+I saw this in some code written by BBC principle developer @kenoir and later located the following useful post: http://mudge.name/2011/01/26/passing-blocks-in-ruby-without-block.html
+
+```ruby
+class Foo
+  def initialize
+    bar &Proc.new # voodoo
+  end
+  def bar(&block)
+    block.call
+  end
+end
+
+Foo.new { puts "hai" }
+```
+
+In short, the reason it works is this: 
+
+> If `Proc.new` is called from inside a method without any arguments of its own, it will return a new Proc containing the block given to its surrounding method.
+
+Very nice!