iex> :atom
:atom
iex> :ok
:ok
iex> :error
:error
iex> Foobar
Foobar
iex> :this_is_a_long_atom_dont_do_this
:this_is_a_long_atom_dont_do_this

iex> Atom.to_string :foo
"foo"
iex> String.to_atom "foo"
:foo
iex> String.to_atom "foo with a space and bar"
:"foo with a space and bar"