Adding penalties or preferences for certain roads.
不过他也坦承，「训练之后仍有大量工作要做」。稳定性、成本、安全合规，一堆问题还没解决，离真正可用还有距离。
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* @param arr 待排序数组
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// Helper to concatenate Uint8Arrays
If you’d rather have one, much larger network in your home, you’re better off upgrading to mesh networking systems. Mesh systems come with a main router and a wireless access point or two that, by default, create one large Wi-Fi system that should be accessible throughout your whole home. They tend to be the best Wi-Fi routers you can get, but that also translates to more expensive, and possibly more complicated, devices. Mesh Wi-Fi systems are, by far, more costly than a simple extender, plus you may have to work with your internet service provider to get your home’s existing network working on your new router.，这一点在同城约会中也有详细论述