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wycats's profile
Yehuda Katz 🥨
Yehuda Katz 🥨
Yehuda Katz  🥨
Verified account
@wycats

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Yehuda Katz  🥨Verified account

@wycats

Tilde Co-Founder, OSS enthusiast and world traveler.

Portland, OR
yehudakatz.com
Joined August 2007

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    1. std::mem::transmute_copy(steve, lol)‏ @steveklabnik 3 Aug 2017
      Replying to @steveklabnik

      i think this is sort of what @withoutboats often says about ownership and lifetimes, it's not really *just* about low-level issues

      1 reply 1 retweet 25 likes
    2. std::mem::transmute_copy(steve, lol)‏ @steveklabnik 3 Aug 2017
      Replying to @steveklabnik @withoutboats

      in this case, rust is making my design better and faster

      2 replies 1 retweet 10 likes
    3. Aaron Patterson‏Verified account @tenderlove 3 Aug 2017
      Replying to @steveklabnik

      Do Rust people measure time spent doing frees? IIRC GC'd langs can be faster than non-GC'd counterparts due to memory mgmt optimizations

      5 replies 1 retweet 5 likes
    4. spooky twink divorcée (abolish ICE)‏ @withoutboats 3 Aug 2017
      Replying to @tenderlove @steveklabnik

      I think a lot of the performance benefit you get in Rust is from cache locality, which GC languages struggle with.

      2 replies 0 retweets 8 likes
    5. spooky twink divorcée (abolish ICE)‏ @withoutboats 3 Aug 2017
      Replying to @withoutboats @tenderlove @steveklabnik

      there are just a lot *less* allocations, in Rust than in Java or a dynamic language, regardless of how they're managed

      1 reply 1 retweet 6 likes
    6. std::mem::transmute_copy(steve, lol)‏ @steveklabnik 3 Aug 2017
      Replying to @withoutboats @tenderlove

      yup. @wycats has been talking about this a lot lately

      2 replies 0 retweets 0 likes
    7. spooky twink divorcée (abolish ICE)‏ @withoutboats 3 Aug 2017
      Replying to @steveklabnik @tenderlove @wycats

      Go might be an exception since I believe they do more to try to stack allocate values (and in general are doing a lot on GC perf)

      2 replies 0 retweets 2 likes
    8. spooky cofactor bugs‏ @hdevalence 3 Aug 2017
      Replying to @withoutboats @steveklabnik and

      My experience trying to write fast Go code is that I had to jump through some undocumented hoops to get it to not do allocs in the hot path

      2 replies 1 retweet 3 likes
    9. spooky cofactor bugs‏ @hdevalence 3 Aug 2017
      Replying to @hdevalence @withoutboats and

      with the result that, writing similar types of code as I do in Rust, I have to think about memory a lot more.

      1 reply 0 retweets 4 likes
    10. Ted Mielczarek‏ @TedMielczarek 4 Aug 2017
      Replying to @hdevalence @withoutboats and

      I think this can be generalized: Go is easier when you're not CPU bound, Rust is easier when you are.

      1 reply 0 retweets 2 likes
      Yehuda Katz  🥨‏Verified account @wycats 4 Aug 2017
      Replying to @TedMielczarek @hdevalence and

      Linux native threads are decent enough that as long as your CPU ratio is non-trivial, Rust is fine. We found this at @tildeio.

      9:42 AM - 4 Aug 2017
      • 2 Likes
      • Ted Mielczarek std::mem::transmute_copy(steve, lol)
      1 reply 0 retweets 2 likes
        1. New conversation
        2. Ted Mielczarek‏ @TedMielczarek 4 Aug 2017
          Replying to @wycats @hdevalence and

          My tweet was vague but by "easier" I mean "don't have to think about lifetimes/memory allocation when using Go"

          1 reply 0 retweets 0 likes
        3. Yehuda Katz  🥨‏Verified account @wycats 4 Aug 2017
          Replying to @TedMielczarek @hdevalence and

          ime rust lifetimes make concurrency much easier to understand (because lifetime/ownership matters way more when concurrent is in play)

          0 replies 0 retweets 2 likes
        4. End of conversation

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