!7

p-exp {
  new AIStrategy_RandomWithVariation<S> strat;
  strat.best.replaceIfSameScore = true;
  LS plusExamples = ll("eval this", "eval that");
  LS minusExamples = ll("do this", "do that", "avoid that", "let's do stuff", "don't be evil");
  strat.submit = f1_scoreRegexpIC(plusExamples, minusExamples);
  strat.random = func -> S { randomID(1) }; // random letter between a and z
  strat.vary = func(S s) -> S { appendInRandomOrder(s, randomID(1)) };
  runStrategyForever/*WhileImprovement*/(strat, optimumScore := 100.0);
}