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rust: add container types structure image

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Marcello 2024-06-26 19:40:39 +02:00
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@ -1322,6 +1322,8 @@ impl Iterator for Counter {
## Smart Pointers ## Smart Pointers
![Rust Container Types](../../img/rust_container-types.svg "Rust Container Types Data Layout")
A **pointer** is a general concept for a variable that contains an address in memory. This address refers to, or "points at" some other data. A **pointer** is a general concept for a variable that contains an address in memory. This address refers to, or "points at" some other data.
The most common kind of pointer in Rust is a *reference*, which you learned about in Chapter 4. References are indicated by the `&` symbol and borrow the value they point to. The most common kind of pointer in Rust is a *reference*, which you learned about in Chapter 4. References are indicated by the `&` symbol and borrow the value they point to.
They don't have any special capabilities other than referring to data. Also, they don`t have any overhead and are the kind of pointer used most often. They don't have any special capabilities other than referring to data. Also, they don`t have any overhead and are the kind of pointer used most often.