Add Binary Representation Of A String 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/).
 
-_450 TILs and counting..._
+_451 TILs and counting..._
 
 ---
 
@@ -83,6 +83,7 @@ _450 TILs and counting..._
 
 - [Append To A Keyword List](elixir/append-to-a-keyword-list.md)
 - [Assert An Exception Is Raised](elixir/assert-an-exception-is-raised.md)
+- [Binary Representation Of A String](elixir/binary-representation-of-a-string.md)
 - [Create A Date With The Date Sigil](elixir/create-a-date-with-the-date-sigil.md)
 - [Dynamically Generating Atoms](elixir/dynamically-generating-atoms.md)
 - [Execute Raw SQL In An Ecto Migration](elixir/execute-raw-sql-in-an-ecto-migration.md)

elixir/binary-representation-of-a-string.md

@@ -0,0 +1,15 @@
+# Binary Representation Of A String
+
+> A common trick in Elixir is to concatenate the null byte <<0>> to a string
+> to see its inner binary representation.
+
+A couple example of this can be seen in the following snippet of code:
+
+```elixir
+> "hello" <> <<0>>
+<<104, 101, 108, 108, 111, 0>>
+> "ƒå®øü†" <> <<0>>
+<<198, 146, 195, 165, 194, 174, 195, 184, 195, 188, 226, 128, 160, 0>>
+```
+
+[source](http://elixir-lang.org/getting-started/binaries-strings-and-char-lists.html)