alt Hacker NewsIndeed, and it doesn't need to be deprecated, because it's an API explicitly designed to give you low-level control where you need it, and because it is appropriately defined as an `unsafe` function with documented safety invariants that must be manually upheld in order for usage to be memory-safe. The documentation also suggests several other (safe) functions that should be used instead when possible, and provides correct usage examples: https://doc.rust-lang.org/std/vec/struct.Vec.html#method.set... .
> and because it is appropriately defined as an `unsafe` function with documented safety invariants that must be manually upheld in order for usage to be memory-safe.
Didn't we learn from c, and the entire raison detre for rust, is that coders cannot be trusted to follow rules like this?
If coders could "(document) safety invariants that must be manually upheld in order for usage to be memory-safe." there's be no need for Rust.
This is the tautology underlying rust as I see it