Struct serde::lib::core::boxed::ThinBox

source ·
pub struct ThinBox<T>where
    T: ?Sized,
{ ptr: WithOpaqueHeader, _marker: PhantomData<T>, }
🔬This is a nightly-only experimental API. (thin_box)
Expand description

ThinBox.

A thin pointer for heap allocation, regardless of T.

Examples

#![feature(thin_box)]
use std::boxed::ThinBox;

let five = ThinBox::new(5);
let thin_slice = ThinBox::<[i32]>::new_unsize([1, 2, 3, 4]);

use std::mem::{size_of, size_of_val};
let size_of_ptr = size_of::<*const ()>();
assert_eq!(size_of_ptr, size_of_val(&five));
assert_eq!(size_of_ptr, size_of_val(&thin_slice));

Fields

ptr: WithOpaqueHeader
🔬This is a nightly-only experimental API. (thin_box)
_marker: PhantomData<T>
🔬This is a nightly-only experimental API. (thin_box)

Implementations

🔬This is a nightly-only experimental API. (thin_box)

Moves a type to the heap with its Metadata stored in the heap allocation instead of on the stack.

Examples
#![feature(thin_box)]
use std::boxed::ThinBox;

let five = ThinBox::new(5);
🔬This is a nightly-only experimental API. (thin_box)

Moves a type to the heap with its Metadata stored in the heap allocation instead of on the stack.

Examples
#![feature(thin_box)]
use std::boxed::ThinBox;

let thin_slice = ThinBox::<[i32]>::new_unsize([1, 2, 3, 4]);

Trait Implementations

Formats the value using the given formatter. Read more
The resulting type after dereferencing.
Dereferences the value.
Mutably dereferences the value.
Formats the value using the given formatter. Read more
Executes the destructor for this type. Read more
The lower-level source of this error, if any. Read more
👎Deprecated since 1.42.0: use the Display impl or to_string()
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type based access to context intended for error reports. Read more

ThinBox<T> is Send if T is Send because the data is owned.

ThinBox<T> is Sync if T is Sync because the data is owned.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

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

🔬This is a nightly-only experimental API. (provide_any)
Data providers should implement this method to provide all values they are able to provide by using demand. Read more
Converts the given value to a String. Read more
The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.