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View Code? Open in Web Editor NEWA small Elixir lib to write state machines
Home Page: https://hexdocs.pm/machinist
License: MIT License
A small Elixir lib to write state machines
Home Page: https://hexdocs.pm/machinist
License: MIT License
For some reason when adding a state group, as in the example:
from "initialized" do
to("locked", event: "lock")
to("opened", event: "open")
to("expired", event: "expired")
end
# ...
When running the transition:
Door.transit(door, event: "lock")
I had a warning error regarding the transition on dialyzer...
warning: guard_fail (is_function(_ :: <<_::64, _::size(8)>>)) can never succeed
And when investigating I realized that when I add a private function and call it in the to clause, everything works again:
from "initialized" do
to(&lock_function/1, event: "lock")
to("opened", event: "open")
to("expired", event: "expired")
end
# ...
defp lock_function(_), do: "locked"
It's as if the transition waits for at least one function like pattern match.
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