I am trying a new library called Monadex and in specific I am trying the Result Monad. The documentation mentions a function called Result.bind and I have made it work with the following code snippet:
defmodule TestMonadex do use Monad.Operators import Monad.Result def p1(x) do x |> success() |> bind(&plus_1/1) end defp plus_1(n), do: n + 1 end
And so far so good.
The problem arises when I try to use the bind operator. According to the docs, this operator is the same thing as the
Result.bind function. Following this logic, the following code snippet should work:
defmodule TestMonadex do use Monad.Operators import Monad.Result def p2(x) do success(x) ->> (&plus_1/1) # This does not compile! end defp plus_1(n), do: n + 1 end
Unfortunately, this is not compiling:
(SyntaxError) syntax error before: '>' Stacktrace: │ (elixir 1.11.2) lib/kernel/parallel_compiler.ex:314: anonymous fn/4 in Kernel.ParallelCompiler.spawn_workers/7 an expression is always required on the right side of ->. Please provide a value after ->
At this point I strongly believe I am not understanding something from the docs or from the library.
What a I doing wrong?