Box

Struct Box 

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pub struct Box(/* private fields */);
Available on crate features alloc only.
Expand description

A type-erased Box.

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impl Debug for Box

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl FromBox for Box

Available on crate feature alloc only.
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fn from_box<T>(data: StdBox<T>) -> Self

Constructs a new storage storing T. Read more
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impl Storage for Box

Available on crate feature alloc only.
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fn new<T>(data: T) -> Self

Constructs a new storage storing T.
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fn ptr(&self) -> NonNull<()>

Returns a const pointer to stored data.
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fn ptr_mut(&mut self) -> NonNull<()>

Returns a mutable pointer to stored data.
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unsafe fn drop_in_place(&mut self, layout: Layout)

Drop the storage in place with the layout of the stored data. Read more
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unsafe fn as_ref<T>(&self) -> &T

Returns a reference to stored data. Read more
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unsafe fn as_mut<T>(&mut self) -> &mut T

Returns a mutable reference to stored data. Read more
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unsafe fn as_pinned_mut<T>(self: Pin<&mut Self>) -> Pin<&mut T>

Returns a pinned mutable reference to stored data. Read more

Auto Trait Implementations§

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impl Freeze for Box

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impl RefUnwindSafe for Box

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impl !Send for Box

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impl !Sync for Box

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impl Unpin for Box

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impl UnwindSafe for Box

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.