< > BotCompany Repo | #1021971 // getOrCreateMultiSet - map lookup or create MultiSet

JavaX fragment (include)

static <A, B> MultiSet<B> getOrCreateMultiSet(Map<A, MultiSet<B>> map, A key) {
  MultiSet<B> b = map.get(key);
  if (b == null)
    map.put(key, b = new MultiSet);
  ret b;
}

Author comment

Began life as a copy of #1017281

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