p.147 — Ch 4 > Modeling the Book Graph > Using Maps for Nodes
In finding “a path from the Publisher node p to an Author node a”,
the book example has:
iex> b = (vv |> Enum.find(&(match?(%{id: :ben_marx}, &1))))
whereas it should be:
iex> a = (vv |> Enum.find(&(match?(%{id: :ben_marx}, &1))))
iex> Graph.get_paths(g, p, a)