Convenience functions for working with atoms.
See also Kernel.is_atom/1.
Kernel.is_atom/1
Converts an atom to a charlist.
Converts an atom to a string.
to_charlist(atom()) :: charlist()
Inlined by the compiler.
iex> Atom.to_charlist(:"An atom") 'An atom'
to_string(atom()) :: String.t()
iex> Atom.to_string(:foo) "foo"