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Ensure symmetry property of collections that have no predictable order #1818

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danieldietrich opened this issue Jan 15, 2017 · 1 comment
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@danieldietrich
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Especially HashSet, HashMap and HashMultimap need to return a hashcode that is combined of underlying elements in a commutative way (e.g. sum of element hashcodes).

@danieldietrich
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see also #1815 (and #1816)

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