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Add missing examples for MaybeUninit

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This commit is contained in:
Guillaume Gomez 2020-09-26 15:31:30 +02:00
parent fadf025723
commit b1ce6190ae
1 changed files with 16 additions and 2 deletions
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18
library/core/src/mem/maybe_uninit.rs
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@ -246,6 +246,14 @@ impl<T> MaybeUninit<T> {
/// Note that dropping a `MaybeUninit<T>` will never call `T`'s drop code. /// Note that dropping a `MaybeUninit<T>` will never call `T`'s drop code.
/// It is your responsibility to make sure `T` gets dropped if it got initialized. /// It is your responsibility to make sure `T` gets dropped if it got initialized.
/// ///
/// # Example
///
/// ```
/// use std::mem::MaybeUninit;
///
/// let v: MaybeUninit<Vec<u8>> = MaybeUninit::new(vec![42]);
/// ```
///
/// [`assume_init`]: MaybeUninit::assume_init /// [`assume_init`]: MaybeUninit::assume_init
#[stable(feature = "maybe_uninit", since = "1.36.0")] #[stable(feature = "maybe_uninit", since = "1.36.0")]
#[rustc_const_stable(feature = "const_maybe_uninit", since = "1.36.0")] #[rustc_const_stable(feature = "const_maybe_uninit", since = "1.36.0")]
@ -259,9 +267,15 @@ impl<T> MaybeUninit<T> {
/// Note that dropping a `MaybeUninit<T>` will never call `T`'s drop code. /// Note that dropping a `MaybeUninit<T>` will never call `T`'s drop code.
/// It is your responsibility to make sure `T` gets dropped if it got initialized. /// It is your responsibility to make sure `T` gets dropped if it got initialized.
/// ///
/// See the [type-level documentation][type] for some examples. /// See the [type-level documentation][MaybeUninit] for some examples.
/// ///
/// [type]: union.MaybeUninit.html /// # Example
///
/// ```
/// use std::mem::MaybeUninit;
///
/// let v: MaybeUninit<String> = MaybeUninit::uninit();
/// ```
#[stable(feature = "maybe_uninit", since = "1.36.0")] #[stable(feature = "maybe_uninit", since = "1.36.0")]
#[rustc_const_stable(feature = "const_maybe_uninit", since = "1.36.0")] #[rustc_const_stable(feature = "const_maybe_uninit", since = "1.36.0")]
#[inline(always)] #[inline(always)]