What if you create a truly unique routing profile that's wildly different from the common ones for which shortcuts were pre-calculated? The system is smart. If it detects that too many shortcuts (~50, for example) need on-the-fly recalculation and deviate significantly, it might determine that falling back to the original, comprehensive A* algorithm for the entire route would actually be faster than doing many small, heavily modified A* calculations.
想法是脆弱的。如果它们已经被彻底解决，那就不再是想法，而是产品。要不被新想法带来的问题吞没，需要一种坚定的努力。问题很容易被清楚说出、被理解，它们会夺走氧气。史蒂夫会把注意力放在想法本身上，哪怕它不完整、甚至看似不太可能。
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Exec runs a command and returns its exit code:
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分享是一种信仰，连接让成长更有温度。