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pcwalton's profile
Patrick Walton
Patrick Walton
Patrick Walton
@pcwalton

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Patrick Walton

@pcwalton

Research engineer at Mozilla

San Francisco, CA
pcwalton.github.io
Joined November 2009

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    Patrick Walton‏ @pcwalton 19 Aug 2019
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    I rag on “if err != nil { return err }”, but I can sort of understand where people who prefer it to try/exceptions are coming from, even though I completely disagree. But I can’t even begin to understand people who prefer hand-written state machines to async/await.

    11:36 AM - 19 Aug 2019
    • 6 Retweets
    • 94 Likes
    • waterwood Gurpreet Singh🦁 Triss 🏳️‍⚧️ Anti- Garvit Pahal Ezekiel Pierson Jim Jordan Pittman Adam Kemp
    11 replies 6 retweets 94 likes
      1. New conversation
      2. Tony “Abolish ICE” Arcieri  🦀‏ @bascule 19 Aug 2019
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        Replying to @pcwalton

        Whenever people talk Go's "readability", I can't get over how every line of actual code is buried in an additional 3+ lines of redundant error handling boilerplate. "...but you get used to it!" is the counterargument, and one I think can be used to justify anything as "readable"

        4 replies 4 retweets 33 likes
      3. Daniel‏ @dehaavi 19 Aug 2019
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        Replying to @bascule @pcwalton

        If you actually add some valuable context and not just "return err", it makes a lot of sense. I like it, because the control flow is so explicit.

        1 reply 0 retweets 1 like
      4. 7 more replies
      1. New conversation
      2. Sabree Blackmon‏ @HeavyPackets 19 Aug 2019
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        Replying to @pcwalton

        Code produced by async/await can be less performant. At least in Rust, async/await produces a set of enum variants that requires runtime matching. Memory based "trampolining" is common in manual future code & there's no runtime overhead. This matters *sometimes*.

        2 replies 0 retweets 2 likes
      3. Patrick Walton‏ @pcwalton 19 Aug 2019
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        Replying to @HeavyPackets

        But match often compiles into a jump table, no?

        2 replies 0 retweets 0 likes
      4. 2 more replies
      1. Joe Groff‏ @jckarter 19 Aug 2019
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        Replying to @pcwalton

        In my day, we had 10 IF INKEY$ = "" THEN GOTO 10 and we liked it

        0 replies 0 retweets 16 likes
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      1. New conversation
      2. Cesar Clandestine‏ @digitalbeard 19 Aug 2019
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        Replying to @pcwalton

        A state machine encoded as a transition table might be the most easily verifiable and interpretable software specification of all.

        1 reply 2 retweets 7 likes
      3. shueytexas‏ @shueytexas 19 Aug 2019
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        Replying to @digitalbeard @pcwalton

        Yeah I was gonna say

        0 replies 0 retweets 0 likes
      4. End of conversation
      1. Robin Hübner‏ @_profan 19 Aug 2019
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        Replying to @pcwalton

        If there's any benefit to the latter it's the ease with which you yourself can serialize/see the state if you should need to, with async/await it's all opaque. Not that this is usually a concern when dealing with like web stuff but state machines in general (games for instance).

        0 replies 0 retweets 5 likes
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      1. New conversation
      2. Tim McNamara‏ @timClicks 20 Aug 2019
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        Replying to @pcwalton

        People are scared of abstraction until they understand it and learn to trust it

        1 reply 0 retweets 0 likes
      3. Mike McGahan‏ @mikemcgahan 20 Aug 2019
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        Replying to @timClicks @pcwalton

        Abstracted: people are afraid of anything that they don’t understand and trust.

        0 replies 0 retweets 1 like
      4. End of conversation

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