When I wrote all about concurrency I argued that all code should be async by default—like Go or Crystal—since there’s already so much implicit behaviour going on in your typical program, you might as well get low-cost I/O while you’re at it. I do think there are contexts where it’s useful to know that you aren’t going to suspend for an arbitrarily long amount of time, like a UI handler, and having the ability to write APIs that require no effects would allow these kinds of guarantees.
深夜的北京，一家24小时药店接到急用药订单。十几秒后，机器人便精准找到货架、取出药品，送到快递窗口。整个过程由机器人自主完成，这便是银河通用的24小时智慧药房。，推荐阅读PDF资料获取更多信息
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순방 가서도 ‘부동산’…李 “韓 집값 걱정? 고민 않도록 하겠다”
ScienceCast Toggle。关于这个话题，PDF资料提供了深入分析
Expression Compilation