elixir-lang/elixir — pull request #870 by devinus (2013-03-01 19:42:30+00:00)
Title: Add support for %w and %W (words) sigils with return type modifiers

As discussed previously in #501, %w can now return a few core data types other than just binaries (extendible to support further types in the future without breaking backwards compatibility). My enthusiasm for this jumped ten-fold now that I'm writing things like this:

```elixir
fields [
:contact_id,
:contact_guid,
:brand_id,
:title,
:first_name,
:middle_name,
:last_name,
:suffix,
:eligibility_mask,
:username,
:user_password,
:dob,
:gender,
:passport_country,
:password_number
]
```