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Add speaker notes for moves-function-calls.md

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Fabian Bornhofen
2023-01-12 18:23:39 +01:00
parent ddd68c5b0f
commit 9c652d06aa
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src/ownership/moves-function-calls.md
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@ -14,3 +14,12 @@ fn main() {
// say_hello(name); // say_hello(name);
} }
``` ```
<details>
* With the first call to `say_hello`, `main` gives up ownership of `name`. Afterwards, `name` cannot be used anymore within `main`.
* `main` can retain ownership if it passes `name` as a reference (`&name`) and if `say_hello` accepts a reference as a parameter.
* Alternatively, `main` can pass a clone of `name` in the first call (`name.clone()`).
* Rust makes it harder than C++ to inadvertently create copies by making move semantics the default, and by forcing programmers to make clones explicit.
</details>