Friendly challenge for Go programmers: Provide or link to a small (50-200 ish lines) idiomatic Go program demonstrating concurrency. (Elegant use of goroutines, channels, etc) I'll provide the equivalent Zig program using async/await and std.event.Loop for comparison.
Downloading a file from many hosts in parallel: https://play.golang.org/p/zSHVflh8dVJ I don't know if I would call this "elegant" per se, but it covers a lot of the territory (bounded concurrency, select, graceful shutdown, sending chans over chans) and it's a real problem, not a toy example.
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This is a great example. I'm going to work towards this one, but it's going to require several weeks of work to implement more networking in the std lib :-)
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