It's similar to how Ruby (which also has "unstructured" imports) and Python are similar in a lot of ways yet make many opposite choices. I think a lot of Ruby's choices are "wrong" even though they fit together within the language.

    import std/errorcodes

    proc p(x: int) {.raises.} =
      if x < 0:
        raise ErrorCode.RangeError
      use x

In my mind a queue.getOne ~= a <- on a Go channel. Idk how you wrap the getOne call in a Future to hand it to Zig's select but that seems like it would be a straightforward pattern once this is all done.

I really do appreciate you being strict about the semantics. Tbh the biggest thing I feel fuzzy on in all this is how go/zig actually go about finding the first completed future in a select, but other than that am I missing something?

https://ziglang.org/documentation/master/std/#std.Io.Queue.g...

Thanks for giving me a reason to peek into how Zig does things now.

Zig has a generic select function[1] that works with futures. As is common, Blub's language feature is Zig's comptime function. Then the io implementation has a select function[2] that "Blocks until one of the futures from the list has a result ready, such that awaiting it will not block. Returns that index." and the generic select switches on that and returns the result. Details unclear tho.

[1] https://ziglang.org/documentation/master/std/#std.Io.select

[2] https://ziglang.org/documentation/master/std/#std.Io.VTable

To speak to the Zig feature: as a junior I kept bugging the seniors about unit testing and how you were supposed to test things that did IO. An explanation of "functional core imperative shell" would have been helpful, but their answer was: "wrap everything in your own classes, pass them everywhere, and provide mocks for testing". This is effectively what Zig is doing at a language level.

It always seemed wrong to me to have to wrap your language's system libraries so that you could use them the "right way" that is testable. It actually turns out that all languages until Zig have simply done it wrong, and IO should be a parameter you pass to any code that needs it to interact with the outside world.

    # source all shell config
    export LC_COLLATE=C # ensure consistent sort, ~ at end
    for file in ~/bin/shell/**/*.(z|)sh; do
      source "$file";
    done

Edit: upon reflection, not much actually: https://github.com/kbd/setup/blob/2eaeaecf76c22be3ecef5c8563...