< > BotCompany Repo | #1022496 // indexByCalculatedField_treeMultiMap

JavaX fragment (include) [tags: use-pretranspiled]

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static <B, A> MultiMap<B, A> lambdaMapLike indexByCalculatedField_treeMultiMap(IF1<A, B> f, Iterable<A> l) {
  MultiMap<B, A> map = treeMultiMap();
  fOr (A a : l) {
    B val = f.get(a);
    if (val != null)
      map.put(val, a);
  }
  ret map;
}

Author comment

Began life as a copy of #1022494

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