Add Defining Multiple Clauses In An Anonymous Function as an elixir til

README.md

@@ -7,7 +7,7 @@ variety of languages and technologies. These are things that don't really
 warrant a full blog post. These are mostly things I learn by pairing with
 smart people at [Hashrocket](http://hashrocket.com/).
 
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+_519 TILs and counting..._
 
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 - [Create A Date With The Date Sigil](elixir/create-a-date-with-the-date-sigil.md)
 - [Creating A PID](elixir/creating-a-pid.md)
 - [Creating Indexes With Ecto](elixir/creating-indexes-with-ecto.md)
+- [Defining Multiple Clauses In An Anonymous Function](elixir/defining-multiple-clauses-in-an-anonymous-function.md)
 - [Determine The Latest Release Of A Hex Package](elixir/determine-the-latest-release-of-a-hex-package.md)
 - [Do You Have The Time?](elixir/do-you-have-the-time.md)
 - [Do You Have The Time? - Part 2](elixir/do-you-have-the-time-part-2.md)

elixir/defining-multiple-clauses-in-an-anonymous-function.md

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+# Defining Multiple Clauses In An Anonymous Function
+
+Anonymous functions often take the approach of doing a single thing with the
+inputs, regardless of their shape or values. There is no need to limit
+ourselves though. The same pattern matching that we use all over our Elixir
+programs can be utilized to define multiple clauses in an anonymous function
+as well.
+
+Consider the following example:
+
+```elixir
+iex> my_function = fn
+  {:ok, x} -> "Everything is ok: #{x}"
+  {:error, x} -> "There was an error: #{x}"
+end
+#Function<6.52032458/1 in :erl_eval.expr/5>
+```
+
+We can then invoke our anonymous function using the bound variable to see
+what results we get with different kinds of inputs.
+
+```
+iex> my_function.({:ok, 123})
+"Everything is ok: 123"
+iex> my_function.({:error, "be warned"})
+"There was an error: be warned"
+```
+
+[source](http://stackoverflow.com/a/18023790/535590)