< > BotCompany Repo | #1010874 // dropValuesFromMapOtherThan - modifies original map

JavaX fragment (include)

static <A, B> void dropValuesFromMapOtherThan(Map<A, B> map, B... values) {
  HashSet<B> valueSet = new HashSet(Arrays.asList(values));
  for (Iterator<Map.Entry<A, B>> it = map.entrySet().iterator(); it.hasNext();)
    if (!valueSet.contains(it.next().getValue())) it.remove();
}

Author comment

Began life as a copy of #1010873

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