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They are not compiling to JVM. LFE compiles to BEAM.

From the docs I understand that it is interpreted and runs on erlang vm. I did not find anywhere that lfe code is compiled.

The LFE compiler is referenced deeper in the documentation[1]. I also had to hunt to answer that question after the tutorial gave an example of compiling one of the example modules.

[1] https://github.com/rvirding/lfe/blob/develop/doc/lfe_comp.tx...

Erlang, LFE, and Elixir are all compiled languages, yes.

Having said that, they all support interactivity via a shell, including dynamically defining functions and tweaking the runtime. LFE does a better job at functions than Erlang; I'd wager Elixir too, but haven't looked closely at it.

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