Why does Rc has to store data on heap?

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17.08.2022

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what about Arc

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17.08.2022

same thing? the only difference is that Arc uses atomic operations for counting references, while Rc doesn't

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17.08.2022

ok got it, I actually didn't knew this

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17.08.2022

Artem Starikov · Accepted Answer

well, if it were on stack, then you wouldn't be able to do this: let foo = Rc::new(42); let bar = Rc::clone(&foo); drop(foo); assert_eq!(*bar, 42);

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17.08.2022