Rust 1.79: Modest Update or Giant Leap Forward?

On June 13, 2024, the Rust programming language released its latest stable version, Rust 1.79.0.

The source code for Rust 1.79.0 was published on GitHub by the Rust Foundation, a non-profit organization overseeing the language’s development. The previous release, Rust 1.78, came out just two months earlier on May 2, 2024.

Users of older builds can easily upgrade to the latest version using the official package manager, rustup, by executing the command rustup update stable in their terminal.

Key innovations and additions in Rust 1.79 include:

  • Inline Constant Support: Now, constants can be declared directly within the program body using the syntax const { ... }, simplifying constant definitions without the need for separate objects.
  • Syntax Stabilization for Type Bounds of Associated Parameters: This enhancement streamlines type constraint declarations for associated parameters, reducing verbose nested generics without sacrificing readability.
  • Automatic Lifetimes Extension in match and if Constructs: This feature simplifies resource management by automatically extending the lifetimes of temporary values.
  • Ability to Import main() Function from External Modules and Third-Party Crates: Enhancing flexibility in module management and reuse.
  • Compiler Flag -Cforce-frame-pointers=yes: This inclusion in the compiler for building the standard library adds metadata for improved stack tracing during profiling.
  • Stabilization of Compilation Capabilities for WebAssembly: Further solidifying Rust’s position in web development.
  • Implementation of Basic (Tier 3) Support for New Target Platforms: Including aarch64-apple-visionos, aarch64-apple-visionos-sim, and riscv32ima-unknown-none-elf.
  • Guaranteed Build (Tier 2 Support) for Windows on aarch64, i686, and x86_64 Architectures: Using the LLVM compiler, although official builds are not provided.

Rust 1.79.0 was a collaborative effort involving 420 developers and contributors from around the globe.

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