erlang - Why do I get syntax error before: '{'? -

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while playing erlang getting started section have met bizarre syntax error on trivial use case (simple map initialization). there suggestion why happen?

1> #{ "key" => 42}.

  • 1: syntax error before: '{'

details: erlang r16b03 (erts-5.10.4), eshell v5.10.4.

because maps introduced in erlang 17.

you have upgrade installation or not use maps.


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