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Is there a realistic opensource example app? Curious to see how it looks like.

Ruby syntax is a big minus for me and afaik Erlang is not strongly typed. While obviously syntax is a personal preference, I'm quite interested to hear from Phoenix users how it compares to Go/Haskell/Rust/etc, especially in cases where I don't need real-time.

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Yeah, this website: https://elixirstatus.com/ is completely open source:

https://github.com/rrrene/elixirstatus-web

You can use dialyzer to add type safety at compile time. It's not quite as good as Elm's compiler but it's much better than JS type checkers.

http://learningelixir.joekain.com/elixir-type-safety/

Dialyzer is good, but -as you mention- it has limits:

http://erlang.org/pipermail/erlang-questions/2015-December/0...

You can't use Dialyzer to give you the more-or-less iron-clad type safety you get in C++ or Java, but you can use it to get warned about many type errors that might have otherwise gone unnoticed.

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