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mjw_byrne

HN member
Joined
Wed, Feb 17, 2016, 7:58 AM UTC
HN karma
321
Public activity
84 items

About mjw_byrne

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Recent public activity

  1. comment
    Comment #44889709

    They're pretty different in British English, I struggled to figure it out until I started thinking about how it would sound with an American accent.

  2. comment
    Comment #44819685

    I've done a from-scratch billing system build. As well as the complexities in the article, some of the logic required can result in rather exotic SQL. Answering questions like "wha…

  3. comment
    Comment #44620294

    It's 40% above a threshold; the trouble is that the threshold is laughably tiny when you compare it to house prices. It's also relatively easily defeated by transferring assets to …

  4. comment
    Comment #43508547

    It's good for a delimiter to be uncommon in the data, so that you don't have to use your escaping mechanism too much. This is a different thing altogether from using "disallowed" c…

  5. comment
    Comment #43504355

    > I'm not clear why quotes prevent parallel processing? Because of the "non-local" effect of quotes, you can't just jump into the middle of a file and start reading it, because you…

  6. comment
    Comment #43504257

    I agree that it's best to pick "unlikely" delimiters so that you don't have to pepper your data with escape chars. But some people (plenty in this thread) really do think "pick a d…

  7. comment
    Comment #43504233

    Yep, we had a constant tug of war between techies who wanted to use open-source tools that actually work (Linux, Postgres, Python, Go etc.) and bigwigs who wanted impressive-soundi…

  8. comment
    Comment #43504209

    Right, but the original point I was responding to is that control characters are disallowed in the data and therefore don't need to be escaped. If you're going to have an escaping …

  9. comment
    Comment #43497528

    It is true for everything that uses quoting, I didn't mean to imply otherwise.

  10. comment
    Comment #43496669

    If you disallow control characters so that you can use them as delimiters, then CSV itself becomes a "binary" data format - or to put it another way, you lose the ability to nest C…

  11. comment
    Comment #43495454

    The idea that binary data doesn't go in CSVs is debatable; people do all sorts of weird stuff. Part of the robustness of a format is coping with abuse. But putting that aside, if t…

  12. comment
    Comment #43495203

    There's just no such thing as a delimiter which won't find its way into the data. Quoting and escaping really are the only robust way.

  13. comment
    Comment #43493362

    I used to be a data analyst at a Big 4 management consultancy, so I've seen an awful lot of this kind of thing. One thing I never understood is the inverse correlation between "cos…

  14. comment
    Comment #43492815

    I considered this but then went the other way - a \ before anything other than a \, newline or comma is treated as an error. This leaves room for adding features, e.g. \N to signif…

  15. comment
    Comment #43492613

    Exactly. "Use a delimiter that's not in the data" is not real serialisation, it's fingers-crossed-hope-for-the-best stuff. I have in the past does data extractions from systems whi…

  16. comment
    Comment #43484641

    CSV is ever so elegant but it has one fatal flaw - quoting has "non-local" effects, i.e. an extra or missing quote at byte 1 can change the meaning of a comma at byte 1000000. This…

  17. comment
    Comment #42930804

    As with GDPR, the spirit is admirable but the fundamental definitions have been hand-waved. So for the foreseeable future, the expensive lawyers you hire are going to answer the im…

  18. comment
    Comment #42573130

    "No one wants a preboot password though" - really? Doesn't strike me as particularly inconvenient, especially given the relative rarity of actual bootups these days. I've been usin…

  19. comment
    Comment #42555022

    Just adding another comment to say how brilliant this film is. So atmospheric, such great music, such a grand presentation of the wild west and it's demise. It makes other westerns…

  20. comment
    Comment #42204369

    The map iteration order change helps to avoid breaking changes in future, by preventing reliance on any specific ordering, but when the change was made it was breaking for anything…

  21. comment
    Comment #41356790

    NAL, but I think GDPR has exceptions for remote access, i.e. if a worker in India is viewing data held in the US, that is not necessarily formally considered a transfer from the US…

  22. comment
    Comment #41235019

    4. Stability and backwards-compatibility. I have never seen a Go version upgrade break anything. Meanwhile I have colleagues who do a thousand-yard-stare if you so much as mention …

  23. comment
    Comment #41041326

    That doesn't strike me as a problem. Definitions are often highly abstract and counterintuitive, with much study required to understand at an intuitive level what motivates them. R…

  24. comment
    Comment #41023380

    These statements always feel a bit circular to me. Sufficiently bad for what? Sufficiently bad to be indistinguishable from a cyberattack. So, "a software update bad enough to look…

  25. comment
    Comment #40766628

    Silly clickbait title, which the author even admits up front. UDP and TCP have different behaviour and different tradeoffs, you have to understand them before choosing one for your…