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Go Concurrency Distilled

402 points · 187 comments · chmaynard

  1. voidfunc · · focus · HN ↗
    Ive been writing Go for over a decade and I still feel like I never quite "got" channels. Every time I use them I need to go consult the manual, and none of the patterns feel obvious which is weird considering the rest of the language feels very obvious.

    Too many years of Java and managing Threads and Runnables probably rotted my brain.

    1. za3faran · · focus · HN ↗
      Arguably, Java's virtual (green) threads managed through structured concurrency and futures is a superior approach.
      1. Mawr · · focus · HN ↗
        Arguably, being 10 years late to the party is pretty bad.

        Just how Go adding generics to the language didn't magically fix the billions lines of non-generic Go code, adding virtual threads to Java didn't update its entire ecosystem to take advantage of them.

        Meanwhile, the entire Go ecosystem from the beginning took advantage of goroutines, so all code you'll ever interact with will have excellent support for them.

        1. gf000 · · focus · HN ↗
          If you make use of a 30 years of library that does simple blocking IO and you call that library from a virtual thread you literally have non-blocking behavior - so your "didn't update it's entire ecosystem" is plain wrong. It's also just a Thread, so even consuming virtual threads by old libs is just fine.

          Also, what 'party'? There is java, go, Haskell and erlang with anything similar. The majority of programming languages don't have such a feature so it's pretty questionable use of word to "be late".

          1. joe_mwangi · · focus · HN ↗
            Trust me. That's a common argument used when java introduces new features. Wait you see the same argument once value classes come to jdk 28.
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