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Empowering everyone to build reliable and efficient software.

1,825 mentions on Hacker News by 819 people: 158 stories, 1,667 comments · first 2012-01-20 · latest 2026-10-22

Mentions per year 1,825 mentions · busiest year 2023 (167)
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  1. …(and public) Default implementation for the struct. There was an issue on the tracker in the past ( https://github.com/rust-lang/rust/issues/42692 ) but the change is big enough that it would require an RFC, actual design and consensus,…
    comment by masklinn · 2018-08-17 · in What else is in Go 1.11?
  2. We did, eventually, after years, define it as a full byte though. https://github.com/rust-lang/rust/pull/46156
    comment by steveklabnik · 2018-08-11 · in Cranelift, a low-level retargetable code generator written in Rust
  3. …As for the rationale behind moving away from jemalloc as a default, the tracking issue is here: https://github.com/rust-lang/rust/issues/36963 (TL;DR: lower maintenance burden, easier cross-compilation, smaller binaries, better system…
    comment by kibwen · 2018-08-02 · in Announcing Rust 1.28
  4. …generate test functions using libtest. I'm not very familiar with the internals, but they're here: https://github.com/rust-lang/rust/blob/master/src/librustdoc...
    comment by djrenren · 2018-07-23 · in The internals of testing in Rust in 2018
  5. …Rust libraries, like libsyntax) without waiting for 30 minute builds after every minor change? [0]: https://github.com/rust-lang/rust/issues/36629 [1]: https://github.com/rust-lang/rfcs/issues/612
    comment by cornstalks · 2018-07-23 · in The internals of testing in Rust in 2018
  6. …which helps put this in further context. I think the original un-minimized crashing code was this: https://github.com/rust-lang/rust/issues/52213#issuecomment-... That's clearly more readable, and that's what more typical rust looks like.
    comment by TheDong · 2018-07-20 · in Announcing Rust 1.27.2
  7. …ub.com/rust-lang/rfcs/blob/master/text/1598-gene... and comments can be left on the tracking issue at https://github.com/rust-lang/rust/issues/44265 .
    comment by kibwen · 2018-07-16 · in Async and Await in Rust: a full proposal
  8. https://github.com/rust-lang/rust/issues/11927 is the discussion when minimal OS X version for Rust was bumped to 10.7.
    comment by sanxiyn · 2018-07-05 · in Sponsorship needed for new OS/2 web browser (2017)
  9. …with a similar train of thought, this PR describes the standard sorting algorithm used in Rust: https://github.com/rust-lang/rust/pull/38192
    comment by dean177 · 2018-07-01 · in Timsort is a sorting algorithm that is efficient for real-world data
  10. …restrict says “this does not alias”, which &Ts trivially do. It goes on &mut T. For example, see https://github.com/rust-lang/rust/pull/31545 , we had to remove this for a few releases due to an LLVM bug; it'll be back in the next release.…
    comment by steveklabnik · 2018-06-30 · in Rust pointers for C programmers
  11. …how it was handled. These arose because `restrict` is comparatively rarely used in C / C++ code. https://github.com/rust-lang/rust/issues/31681
    comment by shepmaster · 2018-06-27 · in Dangerous Optimizations and the Loss of Causality in C and C++ (2010) [pdf]
  12. No. Rust has always had C-family syntax. You can look at the first public commit with the code at https://github.com/rust-lang/rust/tree/d6b7c96c3eb29b9244ece... ; src/test/run-pass shows lots of examples of the syntax.
    comment by chrismorgan · 2018-06-24 · in Rust 2018: an early preview
  13. …of the intents is to make it easier to audit for what is publicly exposed and what isn't. Found it: https://github.com/rust-lang/rust/issues/45521
    comment by epage · 2018-06-23 · in Rust 2018: an early preview
  14. …Stabilizing inline asm in its current form would be a mistake. It's simply not ready. [0]: https://github.com/rust-lang/rust/issues?q=is%3Aopen+is%3Ais...
    comment by roblabla · 2018-06-22 · in Announcing Rust 1.27
  15. ▲ 5
    Rust:Initial PR for async/await syntax is open
    story by ngaut · 2018-06-16 · 0 comments
  16. …the default in gfortran. It looks like the equivalent option is still under discussion for rust: https://github.com/rust-lang/rust/issues/21690
    comment by ihnorton · 2018-06-07 · in Fortran is still a thing (2017)
  17. …https://www.ralfj.de/blog/2017/06/09/mutexguard-sync.html for an area where we were unsound, and https://github.com/rust-lang/rust/pull/45267#issuecomment-33... for an area where we were overly restrictive, and could remove some bounds…
    comment by steveklabnik · 2018-06-05 · in Announcing Rust 1.26.2
  18. We've experimented with MIR-only rlibs - https://github.com/rust-lang/rust/issues/38913#issuecomment-... has some recent data on it - which seem to me like the best approach for solving this, but it needs more work. Eventually, we might…
    comment by eddyb · 2018-06-05 · in How to speed up the Rust compiler some more in 2018
  19. s/z was made stable ten days ago: https://github.com/rust-lang/rust/pull/50265 So, two releases :)
    comment by steveklabnik · 2018-05-31 · in Actix: a small, pragmatic, and fast Rust web framework
  20. …support on top of that. Looks like gnzlbg put more effort into it, but ran into similar issues: https://github.com/rust-lang/rust/issues/42743#issuecomment-...
    comment by lambda · 2018-05-30 · in Mono on AIX and IBM i
  21. …fair comparison :) > "Containers should provide some way to not panic on failed allocations" https://github.com/rust-lang/rust/issues/29802 Definitely a problem, but it's not what people usually call "memory safety". The problem you…
    comment by Yoric · 2018-05-30 · in Zig: programming language designed for robustness optimality and clarity [video]
  22. …stdlib OutOfMemory errors: "Containers should provide some way to not panic on failed allocations" https://github.com/rust-lang/rust/issues/29802
    comment by espeed · 2018-05-30 · in Zig: programming language designed for robustness optimality and clarity [video]
  23. https://github.com/rust-lang/rust/pull/50000 is the first bit, https://github.com/rust-lang/rust/issues/49879 is the tracking issue.
    comment by steveklabnik · 2018-05-29 · in When FFI Function Calls Beat Native C
  24. …and so &mut T can be optimized more aggressively. (We recently turned these optimizations back on: https://github.com/rust-lang/rust/pull/50744 )
    comment by steveklabnik · 2018-05-28 · in An embedded database written in Rust
  25. …For example, lots of people had to downgrade packages on MinGW recently for a bit before fixed, see https://github.com/rust-lang/rust/issues/47048
    comment by kodablah · 2018-05-26 · in Go Is a Shop-built Jig (2014)
  26. Both, it landed a few hours ago, and so will be in 1.28 stable. Here's the PR: https://github.com/rust-lang/rust/pull/50744
    comment by steveklabnik · 2018-05-19 · in On Competing with C Using Haskell (2017)
  27. std::str::from_bytes is that API. Rust’s current implementation of full validation: https://github.com/rust-lang/rust/blob/2a3f5367a23a769a068c3... I have a vague feeling there’s an even faster path for probably-ASCII out there, but I…
    comment by chrismorgan · 2018-05-16 · in Validating UTF-8 strings using as little as 0.7 cycles per byte
  28. …feature, so this footnote gives a false sense of optimism. Furthermore, as per the discussion at https://github.com/rust-lang/rust/issues/28979 , it's very unclear whether or not the stable form of this feature will end up using XID_start…
    comment by kibwen · 2018-05-16 · in Rust turns three
  29. …nonnull %2) #2, !dbg !26, !srcloc !27 Hmm… seems to be related to this Rust bug: https://github.com/rust-lang/rust/issues/16383
    comment by comex · 2018-05-14 · in How Rust 1.26 more than tripled the speed of my code
  30. …to land at approximately the same time. For example, coming up next in 1.27 is stable SIMD: https://github.com/rust-lang/rust/pull/49664 (though only for x86/x86_64 at first; more platforms and high-level crossplatform APIs are on the way).
    comment by kibwen · 2018-05-10 · in Rust 1.26 released
  31. …used most of those features in Rust, except for Address Sanitizer. But even ASan is available now: https://github.com/rust-lang/rust/pull/38699 I remember spending hours using Valgrind on Rust code back in 2011 to track down codegen…
    comment by pcwalton · 2018-05-01 · in How to speed up the Rust compiler in 2018
  32. …Rust certainly has the potential for exponential times when performing large inference. [1]: https://github.com/rust-lang/rust/issues/22204
    comment by shepmaster · 2018-04-30 · in How to speed up the Rust compiler in 2018
  33. …tracking ticket for the larger-scale reworking of the compiler internals for better performance: https://github.com/rust-lang/rust/issues/48547 I think there are a couple of major reasons why rustc is slow, and then a lot of ones which…
    comment by lambda · 2018-04-30 · in How to speed up the Rust compiler in 2018
  34. If you're interested in the current "grand plans" for performance, check out this issue: https://github.com/rust-lang/rust/issues/48547 The query parallelization work has been coming along. Also it was recently discovered that building…
    comment by mastax · 2018-04-30 · in How to speed up the Rust compiler in 2018
  35. …For example, here's where arielb1 discovered that the original scoped threads design was unsound: https://github.com/rust-lang/rust/issues/24292 (which sparked a large debate about whether mem::forget should be allowed in safe code:…
    comment by oconnor663 · 2018-04-30 · in How to speed up the Rust compiler in 2018
  36. …problems. It is relatively easy to create a situation where you overflow your program. See here: https://github.com/rust-lang/rust/issues/50049 Googling around, there are many situations where bad code can lead to an overflow and your code…
    comment by csomar · 2018-04-27 · in Reflections on Rust, and the Sand Castle Metaphor
  37. Assuming nothing catastrophic happens in the next five days, https://github.com/rust-lang/rust/pull/49664 can be merged, by the way. So that'll be one thing off your list as of 1.27.
    comment by steveklabnik · 2018-04-12 · in A Gentle Introduction to Rust
  38. …a normal macro in that it doesn't expand to a bunch of Rust code. I found that pretty neat. [0] - https://github.com/rust-lang/rust/blob/master/src/libcore/ma... [1] - https://github.com/rust-lang/rust/blob/e8af0f4c1f121263e55da...
    comment by phyllostachys · 2018-04-05 · in Making a Statically-Linked, Single-File Web App with React and Rust
  39. …intrinsics) eats into many of the use cases for inline ASM. Not all of course, but many. :-) [1] - https://github.com/rust-lang/rust/issues/29722
    comment by burntsushi · 2018-03-29 · in Rust 1.25 released
  40. I know this won't help you, but there is an issue tracking this: https://github.com/rust-lang/rust/issues/43353
    comment by saghm · 2018-03-24 · in 100 days with Rust: a series of brick walls
  41. The tracking issue for const generics is here: https://github.com/rust-lang/rust/issues/44580
    comment by kibwen · 2018-03-12 · in Rust's 2018 roadmap
  42. So, we almost made str a library type, but there were downsides and not a lot of upsides. https://github.com/rust-lang/rust/pull/19612 > no other data type does? You could argue that slices are a primitive type to arrays (also a primitive…
    comment by steveklabnik · 2018-03-08 · in Rust needs to run, and be easy to use, on every platform
  43. ….parse() vs .into()), shipping 1.0 without async/await, and the whole mess with strings. 0: https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&q=is... 1: https://github.com/rust-lang/rfcs/issues?utf8=%E2%9C%93&q=is... 2:…
    comment by ComputerGuru · 2018-03-08 · in Rust needs to run, and be easy to use, on every platform
  44. …isn't a problem regardless: "There are only Copy types on the rust stack frame being jumped over." https://github.com/rust-lang/rust/issues/48251
    comment by mkj · 2018-03-02 · in Announcing Rust 1.24.1
  45. …it's isolated to clearly marked code (except for some minor bugs in Rust that will be fixed - see https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&q=is... ). Instead TypeScript has a bunch of serious unfixed design flaws that make…
    comment by devit · 2018-02-19 · in Maybe you don't need Rust and WASM to speed up your JS
  46. Though sadly casting float conversions are still UB. There's a really good writeup about it here: https://github.com/rust-lang/rust/issues/10184#issuecomment-...
    comment by andromeduck · 2018-02-19 · in The Evil Within the Comparison Functions
  47. Sure, and the code deals with that case. https://github.com/rust-lang/rust/blob/5cf55165fae5c8538db5c... This does mean you have some somewhat pathological cases, but they're relatively rare because most strings come from only a couple…
    comment by Manishearth · 2018-02-15 · in Rust 1.24
  48. https://github.com/rust-lang/rust/pull/46735 TL;DR, it's not a naive straight `memchr`. `memchr` will generate false positives, then they use knowledge of UTF-8 to weed out the false positives. The pathological case is worse, but the…
    comment by stouset · 2018-02-15 · in Rust 1.24
  49. Quoting a comment I made at https://github.com/rust-lang/rust/pull/27867#issuecomment-22... about that: One other potential issue with this (an issue that also applies to GNU make's MAKE_TERMOUT and MAKE_TERMERR environment variables,…
    comment by JoshTriplett · 2018-02-07 · in Disabling ANSI color output
  50. …as complex as Rust's compiler. Especially when there are many currently known bugs of this sort: https://github.com/rust-lang/rust/issues?q=is%3Aopen+is%3Ais...
    comment by gpm · 2018-02-04 · in RustBelt: securing the foundations of the Rust programming language