A number of eVTOL startups have launched in recent years, but so far none of the aircraft have received "type certificates" for carrying passengers or other commercial purposes. Archer and Joby are the farthest along in that process, having been granted the FAA's final airworthiness criteria — the final step before full approval.
But this often meant that it was impossible to know if a file belonged to a project without trying to load and parse that project.
。业内人士推荐新收录的资料作为进阶阅读
fn half_or_bail(n: int) - Result<int {，更多细节参见新收录的资料
all() takes a list of futures and waits for all of them to complete. It returns when every future has resolved, giving you all the results: