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Sort sets before sampling for reproductibility #179

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@fmder fmder commented Mar 6, 2017

As reported in #177, the behaviour of gp.cxOnePoint is not reproductible because sets are not always ordered the same.

This PR sorts the set before sampling and make the crossover repdroductible.

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cmd-ntrf commented Mar 6, 2017

We do not need to build sets and sort.

All we need is to iterate on the keys of one dictionary and check which types are present in the other and sort the result.

common_types = sorted(type_ for type_ in types2 if type_ in types1)

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