Add Passing Arbitrary Methods As Blocks as a ruby til.

README.md

@@ -112,6 +112,7 @@ smart people at [Hashrocket](http://hashrocket.com/).
 - [Listing Local Variables](ruby/listing-local-variables.md)
 - [Override The Initial Sequence Value](ruby/override-the-initial-sequence-value.md)
 - [Parallel Bundle Install](ruby/parallel-bundle-install.md)
+- [Passing Arbitrary Methods As Blocks](ruby/passing-arbitrary-methods-as-blocks.md)
 - [Percent Notation](ruby/percent-notation.md)
 - [Question Mark Operator](ruby/question-mark-operator.md)
 - [Squeeze Out The Extra Space](ruby/squeeze-out-the-extra-space.md)

ruby/passing-arbritrary-methods-as-blocks.md

@@ -0,0 +1,15 @@
+# Passing Arbitrary Methods As Blocks
+
+Use
+[`Object#method`](http://ruby-doc.org/core-1.8.7/Object.html#method-i-method)
+to create a callable `Method` object that can be passed to methods
+that yield to a block.
+
+```ruby
+def inc(x)
+  x + 1
+end
+
+[1,2,3].map(&method(:inc))
+#=> [2,3,4]
+```