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danluu's profile
Dan Luu
Dan Luu
Dan Luu
@danluu

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Dan Luu

@danluu

https://patreon.com/danluu 

danluu.com
Joined December 2008

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    1. David Crawshaw‏ @davidcrawshaw 7 Sep 2019
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      Replying to @danluu

      I believe code reviews, done well, are primarily about training and team building, not reducing bugs.

      2 replies 4 retweets 44 likes
    2. David Crawshaw‏ @davidcrawshaw 7 Sep 2019
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      Replying to @davidcrawshaw @danluu

      That said, it is still worth questioning their cost/benefit! The modern code review consensus has been promoted by tech companies with enough revenue to hide any costs. The problem is what I think of as the value of code reviews is hard to measure.

      1 reply 0 retweets 4 likes
    3. Dan Luu‏ @danluu 7 Sep 2019
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      Replying to @davidcrawshaw

      My feeling (just a feeling, I don't have evidence for this either way) is that pair programming works better for training than code reviews. I suspect actual training also works better, but since no one does that it's hard to compare.

      2 replies 1 retweet 11 likes
    4. Dan Luu‏ @danluu 7 Sep 2019
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      Replying to @danluu @davidcrawshaw

      I've worked at two companies that are probably P99+ in how much explicit training they offer, but they're not even in the same league as what you get if you walk down to your local go/chess/bridge club, let alone what you get if you're a serious amateur athlete or go player.

      3 replies 1 retweet 12 likes
    5. David Crawshaw‏ @davidcrawshaw 7 Sep 2019
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      Replying to @danluu

      Given it is hard to measure costs and near impossible to quantify benefits, it would be nice if major tech companies were significantly different so we could at least compare macro outcomes. Instead there is surprising amounts of groupthink.

      1 reply 0 retweets 4 likes
    6. Dan Luu‏ @danluu 7 Sep 2019
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      Replying to @davidcrawshaw

      One thing I find funny about programming is the slow diffusion of practices. Fuzzing/randomized testing has been standard practice in hardware for my entire life and there are papers applying this to software that are decades old, I that doubt even 5% of devs use fuzzing today.

      2 replies 3 retweets 11 likes
    7. Dan Luu‏ @danluu 7 Sep 2019
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      Replying to @danluu @davidcrawshaw

      This no different from other fields, but we have this rhetoric around how well reasoned our practices are. But if that's true, why does it take decades for best practices to diffuse, just like every other field where practices are culturally inherited and obviously unoptimized?

      2 replies 1 retweet 0 likes
    8. David Crawshaw‏ @davidcrawshaw 7 Sep 2019
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      Replying to @danluu

      Yes. Even stranger that code reviews went from rare to ubiquitous over the last 20 years with no evidence, when fuzzing did not despite tons of evidence.

      1 reply 1 retweet 8 likes
    9. David Crawshaw‏ @davidcrawshaw 7 Sep 2019
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      Replying to @davidcrawshaw @danluu

      Other fields also do poorly. Here is modern medicine discovering half-century old aerospace safety engineering techniques:https://www.bbc.com/news/uk-scotland-47953541 …

      2 replies 0 retweets 1 like
    10. Dan Luu‏ @danluu 8 Sep 2019
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      Replying to @davidcrawshaw

      My impression is that the largest driver of diffusion of practices is people copying from the perceived most successful company, which was MS and then Google. Joel's old Joel Test article is all about how you should do X because MS is and they'll destroy you if you don't keep up

      1 reply 1 retweet 1 like
      Dan Luu‏ @danluu 8 Sep 2019
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      Replying to @danluu @davidcrawshaw

      Now when people make appeals like this, the reference point is Google or some $10B+ "startup". Unfortunately, the trendy candidates to become the next perceived most successful company have poor practices (IMO). I wonder if we'll see a regression if there's a regime change...

      10:56 AM - 8 Sep 2019
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      • Jon Shea
      1 reply 0 retweets 1 like
        1. Dan Luu‏ @danluu 8 Sep 2019
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          Replying to @danluu @davidcrawshaw

          Another curious thing is that you don't see many appeals like this about Amazon or FB even though both of them do a lot of (IMO) really good engineering. IMO, seems to be about prestige and those companies were never able to cultivate the same aura of prestige as Google.

          0 replies 0 retweets 6 likes
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