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Yuri Astrakhan 2024-09-28 13:01:51 -04:00
parent 73a16c10db
commit 38295a0d8a
1 changed files with 3 additions and 2 deletions
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5
clippy_lints/src/functions/mod.rs
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@ -410,8 +410,9 @@ declare_clippy_lint! {
/// `&Option<T>` in a function signature breaks encapsulation because the caller must own T
/// and move it into an Option to call with it. When returned, the owner must internally store
/// it as `Option<T>` in order to return it.
/// At a lower level `&Option<T>` points to memory that has `presence` bit flag + value,
/// whereas `Option<&T>` is always optimized to a single pointer.
/// At a lower level, `&Option<T>` points to memory with the `presence` bit flag plus the `T` value,
/// whereas `Option<&T>` is usually [optimized](https://doc.rust-lang.org/1.81.0/std/option/index.html#representation)
/// to a single pointer, so it may be more optimal.
///
/// See this [YouTube video](https://www.youtube.com/watch?v=6c7pZYP_iIE) by
/// Logan Smith for an in-depth explanation of why this is important.