alt Hacker News> Rust does this automatically.
A garbage collected language does this automatically. Rust still requires thinking about and tracking memory lifecycles, but the borrow checker will complain and keep you from doing it wrong. That's why LLMs like Rust. It gives immediate feedback on what to fix. By-default constant reference parameters helps prevent major performance problems.
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It’s my understanding that bun was ported to unsafe rust, so even these gains would require additional effort on the team’s part, right?
You don't need to rehash the same old argument. Runtime memory management is forgiving but also inferior in a lot of ways to compiled stuff that works with memory deterministically.
Garbage collection is a method to make programming easier, not to make the resulting program better.
You're getting confused between lifetimes (the static analysis that prevents use after free and similar errors) and lifecycles (more commonly discussed under the heading of ownership) which determines when objects (and thus memory) are allocated and deallocated.
Ownership is automatic. You don't have to explicitly drop things when they go out of scope. (although the responsibility for that is split between the compiler and the library code).
Lifetimes are not automatic, but also have no effect on memory allocation. They are purely a static analysis path and you can make a functioning rust compiler that completely ignores lifetimes.