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Not Rust, C++, but in case anybody wants an example: https://github.com/eclipse/omr/commit/fd99ca42fdbed76cc00e68a5931fcf5dc23a1d09 https://github.com/eclipse/o

• MaxBarraclough 6y ago
  Interesting, thanks. Seems to require use of a common base class though, i.e. to use a class with this pool, you have to inherit from Destructable, or else create a subclass that does. Seems ugly. Perhaps that's the only way it can be done in C++ though.
  • projektfu 6y ago
    It does create an object with that base class for the allocator but returns an object of the type you want from the allocator, using a template (Region::Instance<T>). So the API user only sees the types it's interested in.