Struct abi_stable::std_types::RBox
source · #[repr(C)]pub struct RBox<T> { /* private fields */ }
Expand description
Ffi-safe equivalent of std::box::Box
.
§Example
Declaring a recursive datatype.
use abi_stable::{
std_types::{RBox, RString},
StableAbi,
};
#[repr(u8)]
#[derive(StableAbi)]
enum Command {
SendProduct {
id: u64,
},
GoProtest {
cause: RString,
place: RString,
},
SendComplaint {
cause: RString,
website: RString,
},
WithMetadata {
command: RBox<Command>,
metadata: RString,
},
}
Implementations§
source§impl<T> RBox<T>
impl<T> RBox<T>
sourcepub fn new(value: T) -> Self
pub fn new(value: T) -> Self
Constucts an RBox<T>
from a value.
§Example
use abi_stable::std_types::RBox;
let baux = RBox::new(100);
assert_eq!(*baux, 100);
sourcepub fn from_box(p: Box<T>) -> RBox<T> ⓘ
pub fn from_box(p: Box<T>) -> RBox<T> ⓘ
Converts a Box<T>
to an RBox<T>
, reusing its heap allocation.
§Example
use abi_stable::std_types::RBox;
let baux = Box::new(200);
let baux = RBox::from_box(baux);
assert_eq!(*baux, 200);
sourcepub fn from_move_ptr(p: MovePtr<'_, T>) -> RBox<T> ⓘ
pub fn from_move_ptr(p: MovePtr<'_, T>) -> RBox<T> ⓘ
Constructs a Box<T>
from a MovePtr<'_, T>
.
§Example
use std::mem::ManuallyDrop;
use abi_stable::{
pointer_trait::OwnedPointer,
sabi_types::RSmallBox,
std_types::RBox,
};
let b = RSmallBox::<_, [u8; 1]>::new(77u8);
let rbox: RBox<_> = b.in_move_ptr(|x| RBox::from_move_ptr(x));
assert_eq!(*rbox, 77);
source§impl<T> RBox<T>
impl<T> RBox<T>
sourcepub fn into_box(this: Self) -> Box<T>
pub fn into_box(this: Self) -> Box<T>
Converts this RBox<T>
into a Box<T>
§Allocation
If this is invoked outside of the dynamic library/binary that created the RBox<T>
,
it will allocate a new Box<T>
and move the data into it.
§Example
use abi_stable::std_types::RBox;
let baux: RBox<u32> = RBox::new(200);
let baux: Box<u32> = RBox::into_box(baux);
assert_eq!(*baux, 200);
sourcepub fn into_inner(this: Self) -> T
pub fn into_inner(this: Self) -> T
Unwraps this Box<T>
into the value it owns on the heap.
§Example
use abi_stable::std_types::RBox;
let baux: RBox<u32> = RBox::new(200);
let baux: u32 = RBox::into_inner(baux);
assert_eq!(baux, 200);
Trait Implementations§
source§impl<T> BorrowMut<T> for RBox<T>
impl<T> BorrowMut<T> for RBox<T>
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> BufRead for RBox<T>where
T: BufRead,
impl<T> BufRead for RBox<T>where
T: BufRead,
source§fn fill_buf(&mut self) -> Result<&[u8]>
fn fill_buf(&mut self) -> Result<&[u8]>
Returns the contents of the internal buffer, filling it with more data
from the inner reader if it is empty. Read more
source§fn consume(&mut self, amt: usize)
fn consume(&mut self, amt: usize)
Tells this buffer that
amt
bytes have been consumed from the buffer,
so they should no longer be returned in calls to read
. Read moresource§fn read_line(&mut self, buf: &mut String) -> Result<usize>
fn read_line(&mut self, buf: &mut String) -> Result<usize>
Reads all bytes until a newline (the
0xA
byte) is reached, and append
them to the provided String
buffer. Read moresource§fn has_data_left(&mut self) -> Result<bool, Error>
fn has_data_left(&mut self) -> Result<bool, Error>
🔬This is a nightly-only experimental API. (
buf_read_has_data_left
)Checks if the underlying
Read
has any data left to be read. Read moresource§fn skip_until(&mut self, byte: u8) -> Result<usize, Error>
fn skip_until(&mut self, byte: u8) -> Result<usize, Error>
🔬This is a nightly-only experimental API. (
bufread_skip_until
)Skips all bytes until the delimiter
byte
or EOF is reached. Read moresource§impl<T, O> CanTransmuteElement<O> for RBox<T>
impl<T, O> CanTransmuteElement<O> for RBox<T>
source§type TransmutedPtr = RBox<O>
type TransmutedPtr = RBox<O>
The type of the pointer after it’s element type has been changed.
source§unsafe fn transmute_element_(self) -> Self::TransmutedPtr
unsafe fn transmute_element_(self) -> Self::TransmutedPtr
Transmutes the element type of this pointer.. Read more
source§impl<'de, T> Deserialize<'de> for RBox<T>where
T: Deserialize<'de>,
impl<'de, T> Deserialize<'de> for RBox<T>where
T: Deserialize<'de>,
source§fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>where
D: Deserializer<'de>,
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>where
D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
source§impl<I> DoubleEndedIterator for RBox<I>where
I: DoubleEndedIterator,
impl<I> DoubleEndedIterator for RBox<I>where
I: DoubleEndedIterator,
source§fn next_back(&mut self) -> Option<I::Item>
fn next_back(&mut self) -> Option<I::Item>
Removes and returns an element from the end of the iterator. Read more
source§fn nth_back(&mut self, n: usize) -> Option<I::Item>
fn nth_back(&mut self, n: usize) -> Option<I::Item>
Returns the
n
th element from the end of the iterator. Read moresource§fn advance_back_by(&mut self, n: usize) -> Result<(), NonZero<usize>>
fn advance_back_by(&mut self, n: usize) -> Result<(), NonZero<usize>>
🔬This is a nightly-only experimental API. (
iter_advance_by
)Advances the iterator from the back by
n
elements. Read more1.27.0 · source§fn try_rfold<B, F, R>(&mut self, init: B, f: F) -> R
fn try_rfold<B, F, R>(&mut self, init: B, f: F) -> R
This is the reverse version of
Iterator::try_fold()
: it takes
elements starting from the back of the iterator. Read moresource§impl<T> Error for RBox<T>where
T: StdError,
impl<T> Error for RBox<T>where
T: StdError,
source§fn description(&self) -> &str
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
source§fn cause(&self) -> Option<&dyn StdError>
fn cause(&self) -> Option<&dyn StdError>
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
source§impl<I> ExactSizeIterator for RBox<I>where
I: ExactSizeIterator,
impl<I> ExactSizeIterator for RBox<I>where
I: ExactSizeIterator,
source§impl<T, Inline> From<RBox<T>> for RSmallBox<T, Inline>where
Inline: InlineStorage,
impl<T, Inline> From<RBox<T>> for RSmallBox<T, Inline>where
Inline: InlineStorage,
Converts an RBox into an RSmallBox,currently this allocates.
source§impl<T, Inline> From<RSmallBox<T, Inline>> for RBox<T>where
Inline: InlineStorage,
impl<T, Inline> From<RSmallBox<T, Inline>> for RBox<T>where
Inline: InlineStorage,
Converts a RSmallBox into an RBox,currently this allocates.
source§impl<T> GetPointerKind for RBox<T>
impl<T> GetPointerKind for RBox<T>
source§impl<T> GetStaticEquivalent_ for RBox<T>where
T: __StableAbi,
impl<T> GetStaticEquivalent_ for RBox<T>where
T: __StableAbi,
source§type StaticEquivalent = _static_RBox<<T as GetStaticEquivalent_>::StaticEquivalent>
type StaticEquivalent = _static_RBox<<T as GetStaticEquivalent_>::StaticEquivalent>
The
'static
equivalent of Self
source§impl<T> Hasher for RBox<T>where
T: Hasher,
impl<T> Hasher for RBox<T>where
T: Hasher,
source§fn write_u128(&mut self, i: u128)
fn write_u128(&mut self, i: u128)
Writes a single
u128
into this hasher.source§fn write_usize(&mut self, i: usize)
fn write_usize(&mut self, i: usize)
Writes a single
usize
into this hasher.source§fn write_i128(&mut self, i: i128)
fn write_i128(&mut self, i: i128)
Writes a single
i128
into this hasher.source§fn write_isize(&mut self, i: isize)
fn write_isize(&mut self, i: isize)
Writes a single
isize
into this hasher.source§fn write_length_prefix(&mut self, len: usize)
fn write_length_prefix(&mut self, len: usize)
🔬This is a nightly-only experimental API. (
hasher_prefixfree_extras
)Writes a length prefix into this hasher, as part of being prefix-free. Read more
source§impl<T> IntoReprRust for RBox<T>
impl<T> IntoReprRust for RBox<T>
source§impl<I> Iterator for RBox<I>where
I: Iterator,
impl<I> Iterator for RBox<I>where
I: Iterator,
source§fn next(&mut self) -> Option<I::Item>
fn next(&mut self) -> Option<I::Item>
Advances the iterator and returns the next value. Read more
source§fn size_hint(&self) -> (usize, Option<usize>)
fn size_hint(&self) -> (usize, Option<usize>)
Returns the bounds on the remaining length of the iterator. Read more
source§fn nth(&mut self, n: usize) -> Option<I::Item>
fn nth(&mut self, n: usize) -> Option<I::Item>
Returns the
n
th element of the iterator. Read moresource§fn next_chunk<const N: usize>(
&mut self,
) -> Result<[Self::Item; N], IntoIter<Self::Item, N>>where
Self: Sized,
fn next_chunk<const N: usize>(
&mut self,
) -> Result<[Self::Item; N], IntoIter<Self::Item, N>>where
Self: Sized,
🔬This is a nightly-only experimental API. (
iter_next_chunk
)Advances the iterator and returns an array containing the next
N
values. Read more1.0.0 · source§fn count(self) -> usizewhere
Self: Sized,
fn count(self) -> usizewhere
Self: Sized,
Consumes the iterator, counting the number of iterations and returning it. Read more
source§fn advance_by(&mut self, n: usize) -> Result<(), NonZero<usize>>
fn advance_by(&mut self, n: usize) -> Result<(), NonZero<usize>>
🔬This is a nightly-only experimental API. (
iter_advance_by
)Advances the iterator by
n
elements. Read more1.28.0 · source§fn step_by(self, step: usize) -> StepBy<Self>where
Self: Sized,
fn step_by(self, step: usize) -> StepBy<Self>where
Self: Sized,
Creates an iterator starting at the same point, but stepping by
the given amount at each iteration. Read more
1.0.0 · source§fn chain<U>(self, other: U) -> Chain<Self, <U as IntoIterator>::IntoIter>
fn chain<U>(self, other: U) -> Chain<Self, <U as IntoIterator>::IntoIter>
Takes two iterators and creates a new iterator over both in sequence. Read more
1.0.0 · source§fn zip<U>(self, other: U) -> Zip<Self, <U as IntoIterator>::IntoIter>where
Self: Sized,
U: IntoIterator,
fn zip<U>(self, other: U) -> Zip<Self, <U as IntoIterator>::IntoIter>where
Self: Sized,
U: IntoIterator,
‘Zips up’ two iterators into a single iterator of pairs. Read more
source§fn intersperse_with<G>(self, separator: G) -> IntersperseWith<Self, G>
fn intersperse_with<G>(self, separator: G) -> IntersperseWith<Self, G>
🔬This is a nightly-only experimental API. (
iter_intersperse
)Creates a new iterator which places an item generated by
separator
between adjacent items of the original iterator. Read more1.0.0 · source§fn map<B, F>(self, f: F) -> Map<Self, F>
fn map<B, F>(self, f: F) -> Map<Self, F>
Takes a closure and creates an iterator which calls that closure on each
element. Read more
1.0.0 · source§fn filter<P>(self, predicate: P) -> Filter<Self, P>
fn filter<P>(self, predicate: P) -> Filter<Self, P>
Creates an iterator which uses a closure to determine if an element
should be yielded. Read more
1.0.0 · source§fn filter_map<B, F>(self, f: F) -> FilterMap<Self, F>
fn filter_map<B, F>(self, f: F) -> FilterMap<Self, F>
Creates an iterator that both filters and maps. Read more
1.0.0 · source§fn enumerate(self) -> Enumerate<Self>where
Self: Sized,
fn enumerate(self) -> Enumerate<Self>where
Self: Sized,
Creates an iterator which gives the current iteration count as well as
the next value. Read more
1.0.0 · source§fn skip_while<P>(self, predicate: P) -> SkipWhile<Self, P>
fn skip_while<P>(self, predicate: P) -> SkipWhile<Self, P>
1.0.0 · source§fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P>
fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P>
Creates an iterator that yields elements based on a predicate. Read more
1.57.0 · source§fn map_while<B, P>(self, predicate: P) -> MapWhile<Self, P>
fn map_while<B, P>(self, predicate: P) -> MapWhile<Self, P>
Creates an iterator that both yields elements based on a predicate and maps. Read more
1.0.0 · source§fn skip(self, n: usize) -> Skip<Self>where
Self: Sized,
fn skip(self, n: usize) -> Skip<Self>where
Self: Sized,
Creates an iterator that skips the first
n
elements. Read more1.0.0 · source§fn take(self, n: usize) -> Take<Self>where
Self: Sized,
fn take(self, n: usize) -> Take<Self>where
Self: Sized,
Creates an iterator that yields the first
n
elements, or fewer
if the underlying iterator ends sooner. Read more1.0.0 · source§fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F>
fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F>
Creates an iterator that works like map, but flattens nested structure. Read more
source§fn map_windows<F, R, const N: usize>(self, f: F) -> MapWindows<Self, F, N>
fn map_windows<F, R, const N: usize>(self, f: F) -> MapWindows<Self, F, N>
🔬This is a nightly-only experimental API. (
iter_map_windows
)Calls the given function
f
for each contiguous window of size N
over
self
and returns an iterator over the outputs of f
. Like slice::windows()
,
the windows during mapping overlap as well. Read more1.0.0 · source§fn inspect<F>(self, f: F) -> Inspect<Self, F>
fn inspect<F>(self, f: F) -> Inspect<Self, F>
Does something with each element of an iterator, passing the value on. Read more
1.0.0 · source§fn by_ref(&mut self) -> &mut Selfwhere
Self: Sized,
fn by_ref(&mut self) -> &mut Selfwhere
Self: Sized,
Borrows an iterator, rather than consuming it. Read more
source§fn collect_into<E>(self, collection: &mut E) -> &mut E
fn collect_into<E>(self, collection: &mut E) -> &mut E
🔬This is a nightly-only experimental API. (
iter_collect_into
)Collects all the items from an iterator into a collection. Read more
1.0.0 · source§fn partition<B, F>(self, f: F) -> (B, B)
fn partition<B, F>(self, f: F) -> (B, B)
Consumes an iterator, creating two collections from it. Read more
source§fn is_partitioned<P>(self, predicate: P) -> bool
fn is_partitioned<P>(self, predicate: P) -> bool
🔬This is a nightly-only experimental API. (
iter_is_partitioned
)Checks if the elements of this iterator are partitioned according to the given predicate,
such that all those that return
true
precede all those that return false
. Read more1.27.0 · source§fn try_fold<B, F, R>(&mut self, init: B, f: F) -> R
fn try_fold<B, F, R>(&mut self, init: B, f: F) -> R
An iterator method that applies a function as long as it returns
successfully, producing a single, final value. Read more
1.27.0 · source§fn try_for_each<F, R>(&mut self, f: F) -> R
fn try_for_each<F, R>(&mut self, f: F) -> R
An iterator method that applies a fallible function to each item in the
iterator, stopping at the first error and returning that error. Read more
1.0.0 · source§fn fold<B, F>(self, init: B, f: F) -> B
fn fold<B, F>(self, init: B, f: F) -> B
Folds every element into an accumulator by applying an operation,
returning the final result. Read more
1.51.0 · source§fn reduce<F>(self, f: F) -> Option<Self::Item>
fn reduce<F>(self, f: F) -> Option<Self::Item>
Reduces the elements to a single one, by repeatedly applying a reducing
operation. Read more
source§fn try_reduce<R>(
&mut self,
f: impl FnMut(Self::Item, Self::Item) -> R,
) -> <<R as Try>::Residual as Residual<Option<<R as Try>::Output>>>::TryType
fn try_reduce<R>( &mut self, f: impl FnMut(Self::Item, Self::Item) -> R, ) -> <<R as Try>::Residual as Residual<Option<<R as Try>::Output>>>::TryType
🔬This is a nightly-only experimental API. (
iterator_try_reduce
)Reduces the elements to a single one by repeatedly applying a reducing operation. If the
closure returns a failure, the failure is propagated back to the caller immediately. Read more
1.0.0 · source§fn all<F>(&mut self, f: F) -> bool
fn all<F>(&mut self, f: F) -> bool
Tests if every element of the iterator matches a predicate. Read more
1.0.0 · source§fn any<F>(&mut self, f: F) -> bool
fn any<F>(&mut self, f: F) -> bool
Tests if any element of the iterator matches a predicate. Read more
1.0.0 · source§fn find<P>(&mut self, predicate: P) -> Option<Self::Item>
fn find<P>(&mut self, predicate: P) -> Option<Self::Item>
Searches for an element of an iterator that satisfies a predicate. Read more
1.30.0 · source§fn find_map<B, F>(&mut self, f: F) -> Option<B>
fn find_map<B, F>(&mut self, f: F) -> Option<B>
Applies function to the elements of iterator and returns
the first non-none result. Read more
source§fn try_find<R>(
&mut self,
f: impl FnMut(&Self::Item) -> R,
) -> <<R as Try>::Residual as Residual<Option<Self::Item>>>::TryType
fn try_find<R>( &mut self, f: impl FnMut(&Self::Item) -> R, ) -> <<R as Try>::Residual as Residual<Option<Self::Item>>>::TryType
🔬This is a nightly-only experimental API. (
try_find
)Applies function to the elements of iterator and returns
the first true result or the first error. Read more
1.0.0 · source§fn position<P>(&mut self, predicate: P) -> Option<usize>
fn position<P>(&mut self, predicate: P) -> Option<usize>
Searches for an element in an iterator, returning its index. Read more
1.6.0 · source§fn max_by_key<B, F>(self, f: F) -> Option<Self::Item>
fn max_by_key<B, F>(self, f: F) -> Option<Self::Item>
Returns the element that gives the maximum value from the
specified function. Read more
1.15.0 · source§fn max_by<F>(self, compare: F) -> Option<Self::Item>
fn max_by<F>(self, compare: F) -> Option<Self::Item>
Returns the element that gives the maximum value with respect to the
specified comparison function. Read more
1.6.0 · source§fn min_by_key<B, F>(self, f: F) -> Option<Self::Item>
fn min_by_key<B, F>(self, f: F) -> Option<Self::Item>
Returns the element that gives the minimum value from the
specified function. Read more
1.15.0 · source§fn min_by<F>(self, compare: F) -> Option<Self::Item>
fn min_by<F>(self, compare: F) -> Option<Self::Item>
Returns the element that gives the minimum value with respect to the
specified comparison function. Read more
1.0.0 · source§fn unzip<A, B, FromA, FromB>(self) -> (FromA, FromB)
fn unzip<A, B, FromA, FromB>(self) -> (FromA, FromB)
Converts an iterator of pairs into a pair of containers. Read more
1.36.0 · source§fn copied<'a, T>(self) -> Copied<Self>
fn copied<'a, T>(self) -> Copied<Self>
Creates an iterator which copies all of its elements. Read more
source§fn array_chunks<const N: usize>(self) -> ArrayChunks<Self, N>where
Self: Sized,
fn array_chunks<const N: usize>(self) -> ArrayChunks<Self, N>where
Self: Sized,
🔬This is a nightly-only experimental API. (
iter_array_chunks
)Returns an iterator over
N
elements of the iterator at a time. Read more1.11.0 · source§fn product<P>(self) -> P
fn product<P>(self) -> P
Iterates over the entire iterator, multiplying all the elements Read more
source§fn cmp_by<I, F>(self, other: I, cmp: F) -> Ordering
fn cmp_by<I, F>(self, other: I, cmp: F) -> Ordering
🔬This is a nightly-only experimental API. (
iter_order_by
)Lexicographically compares the elements of this
Iterator
with those
of another with respect to the specified comparison function. Read more1.5.0 · source§fn partial_cmp<I>(self, other: I) -> Option<Ordering>
fn partial_cmp<I>(self, other: I) -> Option<Ordering>
Lexicographically compares the
PartialOrd
elements of
this Iterator
with those of another. The comparison works like short-circuit
evaluation, returning a result without comparing the remaining elements.
As soon as an order can be determined, the evaluation stops and a result is returned. Read moresource§fn partial_cmp_by<I, F>(self, other: I, partial_cmp: F) -> Option<Ordering>where
Self: Sized,
I: IntoIterator,
F: FnMut(Self::Item, <I as IntoIterator>::Item) -> Option<Ordering>,
fn partial_cmp_by<I, F>(self, other: I, partial_cmp: F) -> Option<Ordering>where
Self: Sized,
I: IntoIterator,
F: FnMut(Self::Item, <I as IntoIterator>::Item) -> Option<Ordering>,
🔬This is a nightly-only experimental API. (
iter_order_by
)Lexicographically compares the elements of this
Iterator
with those
of another with respect to the specified comparison function. Read moresource§fn eq_by<I, F>(self, other: I, eq: F) -> bool
fn eq_by<I, F>(self, other: I, eq: F) -> bool
🔬This is a nightly-only experimental API. (
iter_order_by
)1.5.0 · source§fn lt<I>(self, other: I) -> bool
fn lt<I>(self, other: I) -> bool
Determines if the elements of this
Iterator
are lexicographically
less than those of another. Read more1.5.0 · source§fn le<I>(self, other: I) -> bool
fn le<I>(self, other: I) -> bool
Determines if the elements of this
Iterator
are lexicographically
less or equal to those of another. Read more1.5.0 · source§fn gt<I>(self, other: I) -> bool
fn gt<I>(self, other: I) -> bool
Determines if the elements of this
Iterator
are lexicographically
greater than those of another. Read more1.5.0 · source§fn ge<I>(self, other: I) -> bool
fn ge<I>(self, other: I) -> bool
Determines if the elements of this
Iterator
are lexicographically
greater than or equal to those of another. Read more1.82.0 · source§fn is_sorted_by<F>(self, compare: F) -> bool
fn is_sorted_by<F>(self, compare: F) -> bool
Checks if the elements of this iterator are sorted using the given comparator function. Read more
1.82.0 · source§fn is_sorted_by_key<F, K>(self, f: F) -> bool
fn is_sorted_by_key<F, K>(self, f: F) -> bool
Checks if the elements of this iterator are sorted using the given key extraction
function. Read more
source§impl<T> Ord for RBox<T>where
T: Ord,
impl<T> Ord for RBox<T>where
T: Ord,
source§impl<T> OwnedPointer for RBox<T>
impl<T> OwnedPointer for RBox<T>
source§unsafe fn get_move_ptr(this: &mut ManuallyDrop<Self>) -> MovePtr<'_, T>
unsafe fn get_move_ptr(this: &mut ManuallyDrop<Self>) -> MovePtr<'_, T>
Gets a move pointer to the contents of this pointer. Read more
source§unsafe fn drop_allocation(this: &mut ManuallyDrop<Self>)
unsafe fn drop_allocation(this: &mut ManuallyDrop<Self>)
Deallocates the pointer without dropping its owned contents. Read more
source§fn with_move_ptr<F, R>(this: ManuallyDrop<Self>, func: F) -> R
fn with_move_ptr<F, R>(this: ManuallyDrop<Self>, func: F) -> R
Runs a callback with the contents of this pointer, and then deallocates it. Read more
source§impl<T> PartialOrd for RBox<T>where
T: PartialOrd,
impl<T> PartialOrd for RBox<T>where
T: PartialOrd,
source§impl<T> Read for RBox<T>where
T: Read,
impl<T> Read for RBox<T>where
T: Read,
source§fn read(&mut self, buf: &mut [u8]) -> Result<usize>
fn read(&mut self, buf: &mut [u8]) -> Result<usize>
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Rewind to the beginning of a stream. Read more
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The layout of the type provided by implementors.
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source§fn flush(&mut self) -> Result<()>
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source§fn borrow_mut(&mut self) -> &mut T
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source§impl<T> CloneToUninit for Twhere
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source§unsafe fn clone_to_uninit(&self, dst: *mut T)
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