Function RcPtr.compareExchangeWeak

bool compareExchangeWeak(MemoryOrder success = MemoryOrder.seq, MemoryOrder failure = success, E, D, This) (
  scope ref E expected,
  scope D desired
) scope
if (isRcPtr!E && !is(E == shared) && isRcPtr!D && !is(D == shared) && isMoveAssignable!(D, This) && isCopyAssignable!(This, E) && (This.isWeak == D.isWeak) && (This.isWeak == E.isWeak));