Rust iter and into iter：修订间差异
创建页面，内容为“* iter() iterates over the items by reference * iter_mut() iterates over the items, giving a mutable reference to each item * into_iter() iterates over the items, moving them into the new scope So for x in my_vec { ... } is essentially equivalent to my_vec.into_iter().for_each(|x| ... ) - both move the elements of my_vec into the ... scope. If you just need to look at the data, use iter, if you need to edit/mutate it, use iter_mut, and if you need to give it…” |
无编辑摘要 |
||
| 第8行： | 第8行： | ||
<ref>https://hermanradtke.com/2015/06/22/effectively-using-iterators-in-rust.html/</ref> | <ref>https://hermanradtke.com/2015/06/22/effectively-using-iterators-in-rust.html/</ref> | ||
[[Category | [[Category:Rust]] | ||
[[Category | [[Category:Programming]] | ||
2024年6月26日 (三) 10:04的最新版本
- iter() iterates over the items by reference
- iter_mut() iterates over the items, giving a mutable reference to each item
- into_iter() iterates over the items, moving them into the new scope
So for x in my_vec { ... } is essentially equivalent to my_vec.into_iter().for_each(|x| ... ) - both move the elements of my_vec into the ... scope.
If you just need to look at the data, use iter, if you need to edit/mutate it, use iter_mut, and if you need to give it a new owner, use into_iter.[1] [2]