< > BotCompany Repo | #1024860 // uniqueIterator

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

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static <A> ItIt<A> uniqueIterator(Iterator<A> it) {
  new HashSet<A> set;
  ret iff(() -> {
    while licensed {
      if (!it.hasNext()) ret endMarker();
      A a = it.next();
      if (set.add(a)) ret a;
    }
    ret endMarker();
  });
}

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