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erlang-koans's Issues

Running koans throws an error after fresh repo clone.

After cloning this repo and running escript koans the following error was thrown:

script: exception error: no match of right hand side value {error,enoent}

It's thrown because after cloning the repo the folder ./ebin does not exist. Creating this folder solved the problem. But for someone trying to learn erlang and has almost no idea what this is all about that's a very confusing problem to run into since there's no instructions about that in the README.

I will gladly submit a code fix for this (if you have not already) when I figure out just how to make the directory if it does not already exists, however, as I was cloning this to learn erlang I do not have that knowledge at the moment.

Problem with about_maps

Hi, I have a problem with the about_maps koans. The escript koans test results in::

  about_maps_test: reading_a_key_test...*failed*
  ::undef


  about_maps_test: adding_a_new_key_test...*failed*
  ::undef


  about_maps_test: updating_an_existing_key_test...*failed*
  ::undef


  about_maps_test: matching_the_interesting_bits_test...*failed*
  ::undef


  =======================================================
    Failed: 4.  Skipped: 0.  Passed: 75.

Strange enough, I tried to declare the maps by hand in erl and get

1> Map = #{key => value}.
* 1: syntax error before: '{'

Since I'm just started to learn erlang a bit this is pretty confusing for me. What is wrong with the declaration?

I'm running Debian 7.1 with Eshell V5.9.1 (Erlang 15B01).

Thanks,
Frank

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