< > BotCompany Repo | #1019134 // syncPut_trueIfChanged - put & synchronize on map

JavaX fragment (include)

static <A, B> bool syncPut_trueIfChanged(Map<A, B> map, A key, B value) {
  if (map == null) false;
  synchronized(map) { ret neq(map.put(key, value), value); }
}

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Began life as a copy of #1019133

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