elixir-lang/elixir — pull request #1628 by pminten (2013-08-20 16:05:36+00:00)
Title: Allow pipeline into anonymous functions

This allows the following forms of pipeline:

```elixir
1 |> &twice/1
1 |> twice(&1)
1 |> &twice(&1)
1 |> fn x -> twice(x) end
```

In particular it makes pipelining to functions without the subject at the front easier.