iex> 42
42
iex> :ok
:ok
iex> [1, 2, 3, 4]
[1, 2, 3, 4]
iex> {:reply, 42}
{:reply, 42}
iex> 'hello, world'
'hello, world'
iex> [104, 101, 108, 108, 111]
'hello'
iex> 'こにちは、世界'
[12371, 12395, 12385, 12399, 12289, 19990, 30028]
iex> "Hello, 世界"
"Hello, 世界"
iex> <<"Hello, 世界" :: utf8>>
"Hello, 世界"

iex> %{}
%{}
iex> %{a: 1, b: 2}
%{a: 1, b: 2}
iex> defmodule Person do
...>   defstruct name: nil, age: 0, height: 0
...> end
iex> %Person{name: "Kenny Ballou", age: 24, height: 177}
%Person{name: "Kenny Ballou", age: 24, height: 177}

iex> f = fn(x) -> x * x end
#Function<6.54118792/1 in :erl_eval.expr/5>
iex> f.(2)
4
iex> defmodule Foobar do
...>   def foo(x), do: x * 2
...>   def bar(y) do
...>     y |> foo() |> (&*/2).(3)
...>   end
...> end
iex> Foobar.foo(5)
10
iex> Foobar.bar(2)
12