6 ms·

Garbage collected languages handle this fine too.

• jwilm 11y ago
  They handle it fine by tracking references at runtime. The advantage here is compile time verification that the reference will stay valid for the life of the struct - zero runtime overhead.
• Manishearth 11y ago
  Iterator invalidation is still a problem. Plus, having a GC for this would be quite heavy. The codebase was a compiler -- performance is necessary since a compiler's going to be slow anyway.
• steveklabnik 11y ago
  But only for memory, and not for other kinds of resources.