< > BotCompany Repo | #1035262 // syncSetAdd - synchronized add to collection if element isn't there

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

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static <A> bool syncSetAdd(Cl<A> c, A a) {
  if (c == null) false;
  synchronized(collectionMutex(c)) {
    if (c.contains(a)) false;
    c.add(a);
    true;
  }
}

Author comment

Began life as a copy of #1002300

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