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Stories related to "Announcing Rust 1.56.0 and Rust 2021" across the full archive.
The most exciting part of this release is the new [MIR backend](https://blog.rust-lang.org/2016/04/19/MIR.html) becoming the default.
MIR, or "mid-level intermediate representation" is an intermediate representation between high-level AST and low-level LLVM IR. Benefits of MIR include:
* Faste...
detailed release notes - [link](https://github.com/rust-lang/rust/blob/master/RELEASES.md#version-1140-2016-12-22)
Usually there are no release announcements on lobste.rs but this one is particularly interesting because it explains why one could receive multiple mutable references from a shared (non-mutable) reference in Rust because a single keyword (`mut`) was missing in `vec::IntoIter::as_mut_slice`.
Think...
Normally a release announcement wouldn't be interesting, but this has some description of a bug caused by cross FFI error handling that I thought was actually interesting.
The 2018 Edition will be the next edition of Rust. The current, and only, Rust edition is 2015. [What are Editions?](https://rust-lang-nursery.github.io/edition-guide/editions/index.html) explains that Rust editions are like fuzzy major version numbers, released every two or three years, independent...