圖像來源，BBC News Chinese
You know exactly what type of problem I'm talking about. Making your own programming language. An IDE that supports structural editing. More and more advanced static type checkers. Custom build systems. I'm sure you can think of others.
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Map Release Schedule: The intensive preprocessing required to generate all these routing profiles for the entire planet takes about 2-3 days. This means new map updates are now typically released around the 5th of each month, instead of the 2nd.
security framework rather than implemented in a separate runtime layer.