The event came together quickly after that. Brands swarmed the comments expressing interest: “Let’s talk,” said a reply from Alaska Airlines.
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，这一点在爱思助手下载最新版本中也有详细论述
Map Version Synchronicity (Important!): For HH-Routing to work correctly when a route crosses multiple map files (e.g., different countries or regions), all those map files MUST be from the same generation date (i.e., downloaded from OsmAnd around the same time, based on the same underlying OpenStreetMap data version and pre-calculation run).
how much faster and memory efficient your program becomes!