News for hackers. Stuff that matters.

A comment on Zig Devlog: Self-Hosted x86 Back End Is Now Default in Debug Mode. Parent comment

Re:Zig Devlog: Self-Hosted x86 Back End Is Now Default in De... by nindalf on Monday June 09, 2025 @12:52AM (#44221499)
You add hashbrown as an explicit dependency? The standard library HashMap is a re-export of hashbrown. Doesn’t it work for you?
[ Parent | on HN ]
Re:Zig Devlog: Self-Hosted x86 Back End Is Now Default in De... by vlovich123 on Monday June 09, 2025 @01:11AM (#44221587)
Can’t speak for the op but there’s a number of high performance interfaces that avoid redundant computations that are only available directly from hashbrown.
[ Parent | on HN ]
Re:Zig Devlog: Self-Hosted x86 Back End Is Now Default in De... by LAC-Tech on Monday June 09, 2025 @01:10AM (#44221579)
huh, does it? I always add it so I can make non-deterministic hashmaps in rust. oh and you need one more one for the hashing function I think.

But I did not know hashmap re-exported hashbrown, thanks.

[ Parent | on HN ]
Re:Zig Devlog: Self-Hosted x86 Back End Is Now Default in De... by nindalf on Monday June 09, 2025 @02:57AM (#44222025)
Yep, they’re the same since Rust 1.36 (Jul 2019) - https://blog.rust-lang.org/2019/07/04/Rust-1.36.0/
[ Parent | on HN ]
Re:Zig Devlog: Self-Hosted x86 Back End Is Now Default in De... by LAC-Tech on Monday June 09, 2025 @03:11AM (#44222101)
https://doc.rust-lang.org/std/?search=hashbrown

looks like there's no way to access it, outside of hashmap.

Though maybe you just need the third party hasher and you can call with_hasher.

IDK man there's a lot going on with rust.

[ Parent | on HN ]
Re:Zig Devlog: Self-Hosted x86 Back End Is Now Default in De... by nindalf on Monday June 09, 2025 @08:03AM (#44223598)
Yes that’s exactly it. If speed is a priority and the input is trusted, change the hasher to something faster like ahash. The ahash crate makes this easy.
[ Parent | on HN ]