If you could re-design Rust from scratch today, what would you change?

• rust

  2,680 92,627 10.0 Rust

  Empowering everyone to build reliable and efficient software.

  

  This is fully implemented, it just needs someone to write up documentation and a stabilization report and then it can be stabilized. https://github.com/rust-lang/rust/issues/71126

• rfcs

  666 5,685 9.7 Markdown

  RFCs for changes to Rust

  

  According to this comment and this RFC, it could be because IEEE754 totalOrder and the high-performance paths actually implemented in the silicon disagree, but I don't remember that being how it was explained to me.

• WorkOS

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• Idris2

  39 2,390 9.6 Idris

  A purely functional programming language with first class types

  

  I was curious about this and took a bit of a look: it looks like they weren't able to reconcile multiplicities with linear types? See Idris2#73 and Idris2#879

• bincode

  16 2,519 6.9 Rust

  A binary encoder / decoder implementation in Rust.

  

  I've built type-specific hacks to avoid this which produce up to 50% runtime improvements. Latest one is in this PR: https://github.com/bincode-org/bincode/pull/337. The standard library should provide a way to sidestep the copy through a pointer. Useful BufRead/BufWrite traits would be a good start.

• lang-team

  25 190 7.8 JavaScript

  Home of the Rust lang team

  

  The roadblock there isn't the implementation, it's making it all work backward-compatibly. The current status is at https://github.com/rust-lang/lang-team/issues/60#issuecomment-814509681

• gridly-rs

  1 5 0.0 Rust

  A 2D grid library written for humans instead of linear algebraists.

  I'm going through this right now with gridly, my 2D grids library. The main feature is a large and comprehensive set of useful adapters for viewing grids- viewing rows and columns, iterating, etc. I've implemented the whole thing immutably and I'm dreading having to essentially copy-paste all of that for the mutable version.

• purescript

  52 8,452 6.6 Haskell

  A strongly-typed language that compiles to JavaScript

  

  ... devastatingly anti-modular character of globally coherent type classes ...

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• rust-ordered-float

  1 200 6.8 Rust

  This bug about using IEEE 754 totalOrder for the ordered-float crate had one commenter hit on the explanation I think I remember being given for why IEEE 754 is unsuitable, regardless of performance:

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