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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Hector Martin‏ @marcan42 5 Feb 2018
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      How did we let this abomination become the language of the web anyway?pic.twitter.com/dI1SkWKT4i

      15 replies 282 retweets 491 likes
    2. Zergius Eggstream‏ @zergius 5 Feb 2018
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      Replying to @marcan42

      Know language basics and use proper toolpic.twitter.com/NJI0OKOa5L

      2 replies 5 retweets 10 likes
    3. Hector Martin‏ @marcan42 5 Feb 2018
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      Replying to @zergius

      I know you can solve this problem in JS. The whole point is the problem *should not exist*. Python has no problem sorting an untyped array according to natural sort order, instead of somehow defaulting to string coercion, which is almost never what you want.

      2 replies 0 retweets 11 likes
    4. Zergius Eggstream‏ @zergius 5 Feb 2018
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      Replying to @marcan42

      there is no 'natural' sort order for heterogeneous untyped collections. what sort order is 'natural' for [1, '10', null, false, NaN, [], {}] array? i don't want to rely on 'magic' detecting 'right' sort type and prefer consistent method behavior regardless of the data

      1 reply 0 retweets 2 likes
    5. Hector Martin‏ @marcan42 5 Feb 2018
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      Replying to @zergius

      There *is* a natural sort order for *homogeneous* untyped collections. Heterogeneous untyped collections should raise an error (something which Python 2 didn't do and Python 3 fixed). Coercing to strings by default is batshit insane.

      2 replies 1 retweet 22 likes
    6. Hector Martin‏ @marcan42 5 Feb 2018
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      Replying to @marcan42 @zergius

      The only reasonable implementation of untyped array sort is to *do what the comparison operators do*. That's what all versions of Python do (Py3 just doesn't allow comparing disparate types, Py2 does). Javascript does not. That makes *no* sense.

      3 replies 0 retweets 5 likes
    7. Ridley @ a safe distance‏ @11rcombs 5 Feb 2018
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      Replying to @marcan42

      what happens if the comparison operators don't produce a strict weak ordering? Like, throw a NaN in there, then what? (probably "error" is the sane thing)

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 5 Feb 2018
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      Replying to @11rcombs

      It breaks. Basically sort is only defined if comparison is well-behaved, and NaN has ill-behaved (but non-erroring) comparison by IEEE spec, unfortunately. >>> sorted([2.0, float('nan'), 1.0]) [2.0, nan, 1.0] I can't really think of a fix without a special-case kludge for NaN.

      1:51 PM - 5 Feb 2018
      0 replies 0 retweets 0 likes

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