Max: 296.623 ms
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，这一点在纸飞机下载中也有详细论述
Next, open the Find My app and make sure location sharing is enabled. If location sharing has not been set up, the app will prompt you to choose contacts who are allowed to view your location. Only contacts added in advance can receive location updates via satellite. If you are somewhere without cellular or Wi-Fi coverage, you’ll need to use Apple’s Connection Assistant. Open Settings, then tap Satellite and choose a satellite feature.
i don’t think one approach is strictly better than the other. if you need arbitrarily nested lookarounds, the oracle-based approaches are the way to go. if you need high performance and are ok with a more restricted form, ours should work well.