"Bypassing" Specialization in Rust or How I Learned to Stop Worrying and Love F
10 months ago
- #Filesystems
- #Rust
- #Programming
- The author spent a year developing a FAT driver in Rust, encountering challenges with Rust's specialization feature.
- Specialization in Rust allows overriding trait and struct implementations but is currently unstable due to lifetime-related issues.
- The author needed specialization to handle different filesystem operations (read-only vs. read/write) efficiently.
- Attempts to bypass specialization included using the 'spez' crate and a generic enum with PhantomData, both of which failed to meet the needs.
- A solution using function pointers was implemented, allowing conditional behavior based on filesystem type, though it introduced some overhead.
- The author concludes that while their solution works for specific cases, the stabilization of the specialization feature would be more efficient and cleaner.