Rustacean Station

What's New in Rust 1.76, 1.77, and 1.78

31 snips
Oct 26, 2024
Discover the highlights of the latest Rust releases, including new debugging tools like the stabilized `result inspect` and `option inspect` functions. Explore the complexities of recursion support in async functions and enhancements in hash handling and string operations. Dive into the playful challenge of computing the 78th Fibonacci number and learn about improvements in memory safety and error handling. Discussions also touch on ABI compatibility and refined diagnostics, showcasing Rust's evolving capabilities and community engagement.
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ADVICE

Safe Field Offsets

  • Use the offset_of! macro to get field offsets within structs safely.
  • Avoid manual calculations with references, especially in packed structs, as that can cause undefined behavior.
ADVICE

Stripping Debug Info

  • Cargo now strips debug info by default in release profiles for smaller binaries.
  • You can opt-out if needed, but this helps reduce Rust binary sizes significantly.
INSIGHT

Networking in Core

  • The core::net module provides IP-related types without OS dependencies.
  • Useful for OS development or embedded systems, enabling custom network stacks.
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