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mention that MaybeUninit is a bit like Option

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Ralf Jung 2019-05-28 18:04:37 +02:00
parent 7da118581c
commit ce7689293b
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src/libcore/mem.rs
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@ -966,6 +966,9 @@ impl<T: ?Sized> DerefMut for ManuallyDrop<T> {
///
/// The compiler then knows to not make any incorrect assumptions or optimizations on this code.
///
/// You can think of `MaybeUninit<T>` and being a bit like `Option<T>` but without
/// any of the run-time tracking and without any of the safety checks.
///
/// ## out-pointers
///
/// You can use `MaybeUninit<T>` to implement "out-pointers": instead of returning data