[erlang-questions] Testing data with subsets using QuickCheck

[Jesper Louis Andersen]

On Wed, May 10, 2017 at 8:27 PM Alex S. <alex0player@REDACTED> wrote:

> Remember that you can generate a random element of the list using built-in
> generators. I think this would be the most natural approach.
>
>
gen_alex() ->
    ?LET(L, non_empty(list(nat())),
      {L, elements(L)}).

Indeed, this is also a way to do it. Generate a non-empty list of elements,
then pick a random element in the list. This is quite a deal faster since
you don't have to run appending all the time. 270.000 test cases in 10
seconds.
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