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Remove an incorrect note (#1580)

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People are often confused by this: the fact that we can remove the `*`
in the `println!()` is not because the compiler auto-derefs here (it
does not), but because `Display` is implemented for `&T where T:
Display` (a blanket implementation).
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Chayim Refael Friedman 2023-12-12 18:29:50 +02:00 committed by GitHub
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src/smart-pointers/box.md
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@ -60,7 +60,6 @@ fn main() {
<details> <details>
* `Box` is like `std::unique_ptr` in C++, except that it's guaranteed to be not null. * `Box` is like `std::unique_ptr` in C++, except that it's guaranteed to be not null.
* In the above example, you can even leave out the `*` in the `println!` statement thanks to `Deref`.
* A `Box` can be useful when you: * A `Box` can be useful when you:
* have a type whose size that can't be known at compile time, but the Rust compiler wants to know an exact size. * have a type whose size that can't be known at compile time, but the Rust compiler wants to know an exact size.
* want to transfer ownership of a large amount of data. To avoid copying large amounts of data on the stack, instead store the data on the heap in a `Box` so only the pointer is moved. * want to transfer ownership of a large amount of data. To avoid copying large amounts of data on the stack, instead store the data on the heap in a `Box` so only the pointer is moved.