std::boxed::Box
Struct std::boxed::Box
#[lang = "owned_box"] pub struct Box<T>(_) where T: ?Sized;
A pointer type for heap allocation.
See the module-level documentation for more-
Methods
impl<T> Box<T>
[src]
fn new(x: T) -> Box<T>
Allocates memory on the heap and then places x
into it.
This doesn't actually allocate if T
is zero-sized.
Examples
let five = Box::new(5);
impl<T> Box<T> where
T: ?Sized,
[src]
T: ?Sized,
unsafe fn from_raw(raw: *mut T) -> Box<T>
1.4.0
Constructs a box from a raw pointer.
After calling this function, the raw pointer is owned by the resulting Box
. Specifically, the Box
destructor will call the destructor of T
and free the allocated memory. Since the way Box
allocates and releases memory is unspecified, the only valid pointer to pass to this function is the one taken from another Box
via the Box::into_raw
function.
This function is unsafe because improper use may lead to memory problems. For example, a double-free may occur if the function is called twice on the same raw pointer.
Examples
let x = Box::new(5); let ptr = Box::into_raw(x); let x = unsafe { Box::from_raw(ptr) };
fn into_raw(b: Box<T>) -> *mut T
1.4.0
Consumes the Box
, returning the wrapped raw pointer.
After calling this function, the caller is responsible for the memory previously managed by the Box
. In particular, the caller should properly destroy T
and release the memory. The proper way to do so is to convert the raw pointer back into a Box
with the Box::from_raw
function.
Note: this is an associated function, which means that you have to call it as Box::into_raw(b)
instead of b.into_raw()
. This is so that there is no conflict with a method on the inner type.
Examples
let x = Box::new(5); let ptr = Box::into_raw(x);
impl Box<Any + 'static>
[src]
fn downcast<T>(self) -> Result<Box<T>, Box<Any + 'static>> where
T: Any,
T: Any,
Attempt to downcast the box to a concrete type.
Examples
use std::any::Any; fn print_if_string(value: Box<Any>) { if let Ok(string) = value.downcast::<String>() { println!("String ({}): {}", string.len(), string); } } fn main() { let my_string = "Hello World".to_string(); print_if_string(Box::new(my_string)); print_if_string(Box::new(0i8)); }
impl Box<Any + 'static + Send>
[src]
fn downcast<T>(self) -> Result<Box<T>, Box<Any + 'static + Send>> where
T: Any,
T: Any,
Attempt to downcast the box to a concrete type.
Examples
use std::any::Any; fn print_if_string(value: Box<Any + Send>) { if let Ok(string) = value.downcast::<String>() { println!("String ({}): {}", string.len(), string); } } fn main() { let my_string = "Hello World".to_string(); print_if_string(Box::new(my_string)); print_if_string(Box::new(0i8)); }
Trait Implementations
impl<T> AsRef<T> for Box<T> where
T: ?Sized,
1.5.0
[src]
T: ?Sized,
fn as_ref(&self) -> &T
Performs the conversion.
impl<I> DoubleEndedIterator for Box<I> where
I: DoubleEndedIterator + ?Sized,
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I: DoubleEndedIterator + ?Sized,
fn next_back(&mut self) -> Option<<I as Iterator>::Item>
Removes and returns an element from the end of the iterator. Read more
fn rfind<P>(&mut self, predicate: P) -> Option<Self::Item> where
P: FnMut(&Self::Item) -> bool,
P: FnMut(&Self::Item) -> bool,
Searches for an element of an iterator from the right that satisfies a predicate. Read more
impl<T> Borrow<T> for Box<T> where
T: ?Sized,
[src]
T: ?Sized,
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
impl<T> Debug for Box<T> where
T: Debug + ?Sized,
[src]
T: Debug + ?Sized,
fn fmt(&self, f: &mut Formatter) -> Result<(), Error>
Formats the value using the given formatter.
impl<I> ExactSizeIterator for Box<I> where
I: ExactSizeIterator + ?Sized,
[src]
I: ExactSizeIterator + ?Sized,
fn len(&self) -> usize
Returns the exact number of times the iterator will iterate. Read more
fn is_empty(&self) -> bool
Returns whether the iterator is empty. Read more
impl<T> Pointer for Box<T> where
T: ?Sized,
[src]
T: ?Sized,
fn fmt(&self, f: &mut Formatter) -> Result<(), Error>
Formats the value using the given formatter.
impl<T> BorrowMut<T> for Box<T> where
T: ?Sized,
[src]
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<T> Ord for Box<T> where
T: Ord + ?Sized,
[src]
T: Ord + ?Sized,
fn cmp(&self, other: &Box<T>) -> Ordering
This method returns an Ordering
between self
and other
. Read more
impl<I> Iterator for Box<I> where
I: Iterator + ?Sized,
[src]
I: Iterator + ?Sized,
type Item = <I as Iterator>::Item
The type of the elements being iterated over.
fn next(&mut self) -> Option<<I as Iterator>::Item>
Advances the iterator and returns the next value. Read more
fn size_hint(&self) -> (usize, Option<usize>)
Returns the bounds on the remaining length of the iterator. Read more
fn nth(&mut self, n: usize) -> Option<<I as Iterator>::Item>
Returns the n
th element of the iterator. Read more
fn count(self) -> usize
Consumes the iterator, counting the number of iterations and returning it. Read more
fn last(self) -> Option<Self::Item>
Consumes the iterator, returning the last element. Read more
fn chain<U>(self, other: U) -> Chain<Self, <U as IntoIterator>::IntoIter> where
U: IntoIterator<Item = Self::Item>,
U: IntoIterator<Item = Self::Item>,
Takes two iterators and creates a new iterator over both in sequence. Read more
fn zip<U>(self, other: U) -> Zip<Self, <U as IntoIterator>::IntoIter> where
U: IntoIterator,
U: IntoIterator,
'Zips up' two iterators into a single iterator of pairs. Read more
fn map<B, F>(self, f: F) -> Map<Self, F> where
F: FnMut(Self::Item) -> B,
F: FnMut(Self::Item) -> B,
Takes a closure and creates an iterator which calls that closure on each element. Read more
fn filter<P>(self, predicate: P) -> Filter<Self, P> where
P: FnMut(&Self::Item) -> bool,
P: FnMut(&Self::Item) -> bool,
Creates an iterator which uses a closure to determine if an element should be yielded. Read more
fn filter_map<B, F>(self, f: F) -> FilterMap<Self, F> where
F: FnMut(Self::Item) -> Option<B>,
F: FnMut(Self::Item) -> Option<B>,
Creates an iterator that both filters and maps. Read more
fn enumerate(self) -> Enumerate<Self>
Creates an iterator which gives the current iteration count as well as the next value. Read more
fn peekable(self) -> Peekable<Self>
Creates an iterator which can use peek
to look at the next element of the iterator without consuming it. Read more
fn skip_while<P>(self, predicate: P) -> SkipWhile<Self, P> where
P: FnMut(&Self::Item) -> bool,
P: FnMut(&Self::Item) -> bool,
Creates an iterator that [skip
]s elements based on a predicate. Read more
fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P> where
P: FnMut(&Self::Item) -> bool,
P: FnMut(&Self::Item) -> bool,
Creates an iterator that yields elements based on a predicate. Read more
fn skip(self, n: usize) -> Skip<Self>
Creates an iterator that skips the first n
elements. Read more
fn take(self, n: usize) -> Take<Self>
Creates an iterator that yields its first n
elements. Read more
fn scan<St, B, F>(self, initial_state: St, f: F) -> Scan<Self, St, F> where
F: FnMut(&mut St, Self::Item) -> Option<B>,
F: FnMut(&mut St, Self::Item) -> Option<B>,
An iterator adaptor similar to [fold
] that holds internal state and produces a new iterator. Read more
fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F> where
F: FnMut(Self::Item) -> U,
U: IntoIterator,
F: FnMut(Self::Item) -> U,
U: IntoIterator,
Creates an iterator that works like map, but flattens nested structure. Read more
fn fuse(self) -> Fuse<Self>
Creates an iterator which ends after the first [None
]. Read more
fn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnMut(&Self::Item) -> (),
F: FnMut(&Self::Item) -> (),
Do something with each element of an iterator, passing the value on. Read more
fn by_ref(&mut self) -> &mut Self
Borrows an iterator, rather than consuming it. Read more
fn collect<B>(self) -> B where
B: FromIterator<Self::Item>,
B: FromIterator<Self::Item>,
Transforms an iterator into a collection. Read more
fn partition<B, F>(self, f: F) -> (B, B) where
B: Default + Extend<Self::Item>,
F: FnMut(&Self::Item) -> bool,
B: Default + Extend<Self::Item>,
F: FnMut(&Self::Item) -> bool,
Consumes an iterator, creating two collections from it. Read more
fn fold<B, F>(self, init: B, f: F) -> B where
F: FnMut(B, Self::Item) -> B,
F: FnMut(B, Self::Item) -> B,
An iterator adaptor that applies a function, producing a single, final value. Read more
fn all<F>(&mut self, f: F) -> bool where
F: FnMut(Self::Item) -> bool,
F: FnMut(Self::Item) -> bool,
Tests if every element of the iterator matches a predicate. Read more
fn any<F>(&mut self, f: F) -> bool where
F: FnMut(Self::Item) -> bool,
F: FnMut(Self::Item) -> bool,
Tests if any element of the iterator matches a predicate. Read more
fn find<P>(&mut self, predicate: P) -> Option<Self::Item> where
P: FnMut(&Self::Item) -> bool,
P: FnMut(&Self::Item) -> bool,
Searches for an element of an iterator that satisfies a predicate. Read more
fn position<P>(&mut self, predicate: P) -> Option<usize> where
P: FnMut(Self::Item) -> bool,
P: FnMut(Self::Item) -> bool,
Searches for an element in an iterator, returning its index. Read more
fn rposition<P>(&mut self, predicate: P) -> Option<usize> where
P: FnMut(Self::Item) -> bool,
Self: ExactSizeIterator + DoubleEndedIterator,
P: FnMut(Self::Item) -> bool,
Self: ExactSizeIterator + DoubleEndedIterator,
Searches for an element in an iterator from the right, returning its index. Read more
fn max(self) -> Option<Self::Item> where
Self::Item: Ord,
Self::Item: Ord,
Returns the maximum element of an iterator. Read more
fn min(self) -> Option<Self::Item> where
Self::Item: Ord,
Self::Item: Ord,
Returns the minimum element of an iterator. Read more
fn max_by_key<B, F>(self, f: F) -> Option<Self::Item> where
B: Ord,
F: FnMut(&Self::Item) -> B,
1.6.0
B: Ord,
F: FnMut(&Self::Item) -> B,
Returns the element that gives the maximum value from the specified function. Read more
fn max_by<F>(self, compare: F) -> Option<Self::Item> where
F: FnMut(&Self::Item, &Self::Item) -> Ordering,
1.15.0
F: FnMut(&Self::Item, &Self::Item) -> Ordering,
Returns the element that gives the maximum value with respect to the specified comparison function. Read more
fn min_by_key<B, F>(self, f: F) -> Option<Self::Item> where
B: Ord,
F: FnMut(&Self::Item) -> B,
1.6.0
B: Ord,
F: FnMut(&Self::Item) -> B,
Returns the element that gives the minimum value from the specified function. Read more
fn min_by<F>(self, compare: F) -> Option<Self::Item> where
F: FnMut(&Self::Item, &Self::Item) -> Ordering,
1.15.0
F: FnMut(&Self::Item, &Self::Item) -> Ordering,
Returns the element that gives the minimum value with respect to the specified comparison function. Read more
fn rev(self) -> Rev<Self> where
Self: DoubleEndedIterator,
Self: DoubleEndedIterator,
Reverses an iterator's direction. Read more
fn unzip<A, B, FromA, FromB>(self) -> (FromA, FromB) where
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
Self: Iterator<Item = (A, B)>,
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
Self: Iterator<Item = (A, B)>,
Converts an iterator of pairs into a pair of containers. Read more
fn cloned<'a, T>(self) -> Cloned<Self> where
Self: Iterator<Item = &'a T>,
T: 'a + Clone,
Self: Iterator<Item = &'a T>,
T: 'a + Clone,
Creates an iterator which [clone
]s all of its elements. Read more
fn cycle(self) -> Cycle<Self> where
Self: Clone,
Self: Clone,
Repeats an iterator endlessly. Read more
fn sum<S>(self) -> S where
S: Sum<Self::Item>,
1.11.0
S: Sum<Self::Item>,
Sums the elements of an iterator. Read more
fn product<P>(self) -> P where
P: Product<Self::Item>,
1.11.0
P: Product<Self::Item>,
Iterates over the entire iterator, multiplying all the elements Read more
fn cmp<I>(self, other: I) -> Ordering where
I: IntoIterator<Item = Self::Item>,
Self::Item: Ord,
1.5.0
I: IntoIterator<Item = Self::Item>,
Self::Item: Ord,
Lexicographically compares the elements of this Iterator
with those of another. Read more
fn partial_cmp<I>(self, other: I) -> Option<Ordering> where
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
1.5.0
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
Lexicographically compares the elements of this Iterator
with those of another. Read more
fn eq<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialEq<<I as IntoIterator>::Item>,
1.5.0
I: IntoIterator,
Self::Item: PartialEq<<I as IntoIterator>::Item>,
Determines if the elements of this Iterator
are equal to those of another. Read more
fn ne<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialEq<<I as IntoIterator>::Item>,
1.5.0
I: IntoIterator,
Self::Item: PartialEq<<I as IntoIterator>::Item>,
Determines if the elements of this Iterator
are unequal to those of another. Read more
fn lt<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
1.5.0
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
Determines if the elements of this Iterator
are lexicographically less than those of another. Read more
fn le<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
1.5.0
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
Determines if the elements of this Iterator
are lexicographically less or equal to those of another. Read more
fn gt<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
1.5.0
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
Determines if the elements of this Iterator
are lexicographically greater than those of another. Read more
fn ge<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
1.5.0
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
Determines if the elements of this Iterator
are lexicographically greater than or equal to those of another. Read more
impl<T> Eq for Box<T> where
T: Eq + ?Sized,
[src]
T: Eq + ?Sized,
impl<'a, A, R> FnOnce<A> for Box<FnBox<A, Output = R> + 'a>
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type Output = R
The returned type after the call operator is used.
extern "rust-call" fn call_once(self, args: A) -> R
This is called when the call operator is used.
impl<'a, A, R> FnOnce<A> for Box<FnBox<A, Output = R> + 'a + Send>
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type Output = R
The returned type after the call operator is used.
extern "rust-call" fn call_once(self, args: A) -> R
This is called when the call operator is used.
impl<T> Display for Box<T> where
T: Display + ?Sized,
[src]
T: Display + ?Sized,
fn fmt(&self, f: &mut Formatter) -> Result<(), Error>
Formats the value using the given formatter. Read more
impl<T> From<T> for Box<T>
1.6.0
[src]
fn from(t: T) -> Box<T>
Performs the conversion.
impl<'a, T> From<&'a [T]> for Box<[T]> where
T: Copy,
1.17.0
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T: Copy,
fn from(slice: &'a [T]) -> Box<[T]>
Performs the conversion.
impl<'a> From<&'a str> for Box<str>
1.17.0
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fn from(s: &'a str) -> Box<str>
Performs the conversion.
impl<T> Drop for Box<T> where
T: ?Sized,
[src]
T: ?Sized,
fn drop(&mut self)
A method called when the value goes out of scope. Read more
impl<T> DerefMut for Box<T> where
T: ?Sized,
[src]
T: ?Sized,
fn deref_mut(&mut self) -> &mut T
The method called to mutably dereference a value
impl<T, U> CoerceUnsized<Box<U>> for Box<T> where
T: Unsize<U> + ?Sized,
U: ?Sized,
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T: Unsize<U> + ?Sized,
U: ?Sized,
impl<T> Clone for Box<T> where
T: Clone,
[src]
T: Clone,
fn clone(&self) -> Box<T>
Returns a new box with a clone()
of this box's contents.
Examples
let x = Box::new(5); let y = x.clone();
fn clone_from(&mut self, source: &Box<T>)
Copies source
's contents into self
without creating a new allocation.
Examples
let x = Box::new(5); let mut y = Box::new(10); y.clone_from(&x); assert_eq!(*y, 5);
impl Clone for Box<str>
1.3.0
[src]
fn clone(&self) -> Box<str>
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
impl<T> Clone for Box<[T]> where
T: Clone,
1.3.0
[src]
T: Clone,
fn clone(&self) -> Box<[T]>
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
impl<T> PartialOrd<Box<T>> for Box<T> where
T: PartialOrd<T> + ?Sized,
[src]
T: PartialOrd<T> + ?Sized,
fn partial_cmp(&self, other: &Box<T>) -> Option<Ordering>
This method returns an ordering between self
and other
values if one exists. Read more
fn lt(&self, other: &Box<T>) -> bool
This method tests less than (for self
and other
) and is used by the <
operator. Read more
fn le(&self, other: &Box<T>) -> bool
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
fn ge(&self, other: &Box<T>) -> bool
This method tests greater than or equal to (for self
and other
) and is used by the >=
operator. Read more
fn gt(&self, other: &Box<T>) -> bool
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
impl<T> Hash for Box<T> where
T: Hash + ?Sized,
[src]
T: Hash + ?Sized,
fn hash<H>(&self, state: &mut H) where
H: Hasher,
H: Hasher,
Feeds this value into the given [Hasher
]. Read more
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
1.3.0
H: Hasher,
Feeds a slice of this type into the given [Hasher
]. Read more
impl<T> PartialEq<Box<T>> for Box<T> where
T: PartialEq<T> + ?Sized,
[src]
T: PartialEq<T> + ?Sized,
fn eq(&self, other: &Box<T>) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Box<T>) -> bool
This method tests for !=
.
impl<T> Deref for Box<T> where
T: ?Sized,
[src]
T: ?Sized,
type Target = T
The resulting type after dereferencing
fn deref(&self) -> &T
The method called to dereference a value
impl<I> FusedIterator for Box<I> where
I: FusedIterator + ?Sized,
[src]
I: FusedIterator + ?Sized,
impl<T> Boxed for Box<T>
[src]
type Data = T
The kind of data that is stored in this kind of box.
type Place = IntermediateBox<T>
The place that will negotiate the storage of the data.
unsafe fn finalize(b: IntermediateBox<T>) -> Box<T>
Converts filled place into final owning value, shifting deallocation/cleanup responsibilities (if any remain), over to returned instance of Self
and forgetting filled
. Read more
impl<T> Default for Box<T> where
T: Default,
[src]
T: Default,
fn default() -> Box<T>
Creates a Box<T>
, with the Default
value for T.
impl<T> Default for Box<[T]>
[src]
fn default() -> Box<[T]>
Returns the "default value" for a type. Read more
impl Default for Box<str>
1.17.0
[src]
fn default() -> Box<str>
Returns the "default value" for a type. Read more
impl<T> AsMut<T> for Box<T> where
T: ?Sized,
1.5.0
[src]
T: ?Sized,
fn as_mut(&mut self) -> &mut T
Performs the conversion.
impl<'a, E: Error + 'a> From<E> for Box<Error + 'a>
[src]
fn from(err: E) -> Box<Error + 'a>
Performs the conversion.
impl<'a, E: Error + Send + Sync + 'a> From<E> for Box<Error + Send + Sync + 'a>
[src]
fn from(err: E) -> Box<Error + Send + Sync + 'a>
Performs the conversion.
impl From<String> for Box<Error + Send + Sync>
[src]
fn from(err: String) -> Box<Error + Send + Sync>
Performs the conversion.
impl From<String> for Box<Error>
1.7.0
[src]
fn from(str_err: String) -> Box<Error>
Performs the conversion.
impl<'a, 'b> From<&'b str> for Box<Error + Send + Sync + 'a>
[src]
fn from(err: &'b str) -> Box<Error + Send + Sync + 'a>
Performs the conversion.
impl<'a> From<&'a str> for Box<Error>
1.7.0
[src]
fn from(err: &'a str) -> Box<Error>
Performs the conversion.
impl<T: Error> Error for Box<T>
1.7.0
[src]
fn description(&self) -> &str
A short description of the error. Read more
fn cause(&self) -> Option<&Error>
The lower-level cause of this error, if any. Read more
impl<'a> From<&'a CStr> for Box<CStr>
1.17.0
[src]
fn from(s: &'a CStr) -> Box<CStr>
Performs the conversion.
impl Default for Box<CStr>
1.17.0
[src]
fn default() -> Box<CStr>
Returns the "default value" for a type. Read more
impl<'a> From<&'a OsStr> for Box<OsStr>
1.17.0
[src]
fn from(s: &'a OsStr) -> Box<OsStr>
Performs the conversion.
impl Default for Box<OsStr>
1.17.0
[src]
fn default() -> Box<OsStr>
Returns the "default value" for a type. Read more
impl<R: Read + ?Sized> Read for Box<R>
[src]
fn read(&mut self, buf: &mut [u8]) -> Result<usize>
Pull some bytes from this source into the specified buffer, returning how many bytes were read. Read more
fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize>
Read all bytes until EOF in this source, placing them into buf
. Read more
fn read_to_string(&mut self, buf: &mut String) -> Result<usize>
Read all bytes until EOF in this source, placing them into buf
. Read more
fn read_exact(&mut self, buf: &mut [u8]) -> Result<()>
Read the exact number of bytes required to fill buf
. Read more
fn by_ref(&mut self) -> &mut Self where
Self: Sized,
Self: Sized,
Creates a "by reference" adaptor for this instance of Read
. Read more
fn bytes(self) -> Bytes<Self> where
Self: Sized,
Self: Sized,
Transforms this Read
instance to an Iterator
over its bytes. Read more
fn chars(self) -> Chars<Self> where
Self: Sized,
Self: Sized,
Transforms this Read
instance to an Iterator
over char
s. Read more
fn chain<R: Read>(self, next: R) -> Chain<Self, R> where
Self: Sized,
Self: Sized,
Creates an adaptor which will chain this stream with another. Read more
fn take(self, limit: u64) -> Take<Self> where
Self: Sized,
Self: Sized,
Creates an adaptor which will read at most limit
bytes from it. Read more
impl<W: Write + ?Sized> Write for Box<W>
[src]
fn write(&mut self, buf: &[u8]) -> Result<usize>
Write a buffer into this object, returning how many bytes were written. Read more
fn flush(&mut self) -> Result<()>
Flush this output stream, ensuring that all intermediately buffered contents reach their destination. Read more
fn write_all(&mut self, buf: &[u8]) -> Result<()>
Attempts to write an entire buffer into this write. Read more
fn write_fmt(&mut self, fmt: Arguments) -> Result<()>
Writes a formatted string into this writer, returning any error encountered. Read more
fn by_ref(&mut self) -> &mut Self where
Self: Sized,
Self: Sized,
Creates a "by reference" adaptor for this instance of Write
. Read more
impl<S: Seek + ?Sized> Seek for Box<S>
[src]
fn seek(&mut self, pos: SeekFrom) -> Result<u64>
Seek to an offset, in bytes, in a stream. Read more
impl<B: BufRead + ?Sized> BufRead for Box<B>
[src]
fn fill_buf(&mut self) -> Result<&[u8]>
Fills the internal buffer of this object, returning the buffer contents. Read more
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 more
fn read_until(&mut self, byte: u8, buf: &mut Vec<u8>) -> Result<usize>
Read all bytes into buf
until the delimiter byte
or EOF is reached. Read more
fn read_line(&mut self, buf: &mut String) -> Result<usize>
Read all bytes until a newline (the 0xA byte) is reached, and append them to the provided buffer. Read more
fn split(self, byte: u8) -> Split<Self> where
Self: Sized,
Self: Sized,
Returns an iterator over the contents of this reader split on the byte byte
. Read more
fn lines(self) -> Lines<Self> where
Self: Sized,
Self: Sized,
Returns an iterator over the lines of this reader. Read more
impl<'a> From<&'a Path> for Box<Path>
1.17.0
[src]
fn from(path: &'a Path) -> Box<Path>
Performs the conversion.
© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/boxed/struct.Box.html