< > BotCompany Repo | #1028140 // mapToKeys - iterate on list, keep object as value, function result as key

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

Libraryless. Click here for Pure Java version (4573L/25K).

static <A, B> Map<B, A> lambdaMapLike mapToKeys(Iterable<A> l, IF1<A, B> f) {
  if (l == null) null;
  new HashMap<B, A> map;
  for (A a : l)
    map.put(f.get(a), a);
  ret map;
}

static <A, B> Map<B, A> mapToKeys(IF1<A, B> f, Iterable<A> or A[] l) {
  ret mapToKeys(l, f);
}

Author comment

Began life as a copy of #1021879

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