1.0.0[−][src]Enum std::borrow::Cow
A clone-on-write smart pointer.
The type Cow
is a smart pointer providing clone-on-write functionality: it
can enclose and provide immutable access to borrowed data, and clone the
data lazily when mutation or ownership is required. The type is designed to
work with general borrowed data via the Borrow
trait.
Cow
implements Deref
, which means that you can call
non-mutating methods directly on the data it encloses. If mutation
is desired, to_mut
will obtain a mutable reference to an owned
value, cloning if necessary.
Examples
use std::borrow::Cow; fn abs_all(input: &mut Cow<[i32]>) { for i in 0..input.len() { let v = input[i]; if v < 0 { // Clones into a vector if not already owned. input.to_mut()[i] = -v; } } } // No clone occurs because `input` doesn't need to be mutated. let slice = [0, 1, 2]; let mut input = Cow::from(&slice[..]); abs_all(&mut input); // Clone occurs because `input` needs to be mutated. let slice = [-1, 0, 1]; let mut input = Cow::from(&slice[..]); abs_all(&mut input); // No clone occurs because `input` is already owned. let mut input = Cow::from(vec![-1, 0, 1]); abs_all(&mut input);Run
Another example showing how to keep Cow
in a struct:
use std::borrow::Cow; struct Items<'a, X: 'a> where [X]: ToOwned<Owned = Vec<X>> { values: Cow<'a, [X]>, } impl<'a, X: Clone + 'a> Items<'a, X> where [X]: ToOwned<Owned = Vec<X>> { fn new(v: Cow<'a, [X]>) -> Self { Items { values: v } } } // Creates a container from borrowed values of a slice let readonly = [1, 2]; let borrowed = Items::new((&readonly[..]).into()); match borrowed { Items { values: Cow::Borrowed(b) } => println!("borrowed {:?}", b), _ => panic!("expect borrowed value"), } let mut clone_on_write = borrowed; // Mutates the data from slice into owned vec and pushes a new value on top clone_on_write.values.to_mut().push(3); println!("clone_on_write = {:?}", clone_on_write.values); // The data was mutated. Let check it out. match clone_on_write { Items { values: Cow::Owned(_) } => println!("clone_on_write contains owned data"), _ => panic!("expect owned data"), }Run
Variants
Borrowed(&'a B)
Borrowed data.
Owned data.
Implementations
impl<'_, B> Cow<'_, B> where
B: ToOwned + ?Sized,
[src]
B: ToOwned + ?Sized,
pub fn is_borrowed(&self) -> bool
[src]
Returns true if the data is borrowed, i.e. if to_mut
would require additional work.
Examples
#![feature(cow_is_borrowed)] use std::borrow::Cow; let cow = Cow::Borrowed("moo"); assert!(cow.is_borrowed()); let bull: Cow<'_, str> = Cow::Owned("...moo?".to_string()); assert!(!bull.is_borrowed());Run
pub fn is_owned(&self) -> bool
[src]
Returns true if the data is owned, i.e. if to_mut
would be a no-op.
Examples
#![feature(cow_is_borrowed)] use std::borrow::Cow; let cow: Cow<'_, str> = Cow::Owned("moo".to_string()); assert!(cow.is_owned()); let bull = Cow::Borrowed("...moo?"); assert!(!bull.is_owned());Run
pub fn to_mut(&mut self) -> &mut <B as ToOwned>::Owned
[src]
Acquires a mutable reference to the owned form of the data.
Clones the data if it is not already owned.
Examples
use std::borrow::Cow; let mut cow = Cow::Borrowed("foo"); cow.to_mut().make_ascii_uppercase(); assert_eq!( cow, Cow::Owned(String::from("FOO")) as Cow<str> );Run
pub fn into_owned(self) -> <B as ToOwned>::Owned
[src]
Extracts the owned data.
Clones the data if it is not already owned.
Examples
Calling into_owned
on a Cow::Borrowed
clones the underlying data
and becomes a Cow::Owned
:
use std::borrow::Cow; let s = "Hello world!"; let cow = Cow::Borrowed(s); assert_eq!( cow.into_owned(), String::from(s) );Run
Calling into_owned
on a Cow::Owned
is a no-op:
use std::borrow::Cow; let s = "Hello world!"; let cow: Cow<str> = Cow::Owned(String::from(s)); assert_eq!( cow.into_owned(), String::from(s) );Run
Trait Implementations
impl<'a> Add<&'a str> for Cow<'a, str>
1.14.0[src]
type Output = Cow<'a, str>
The resulting type after applying the +
operator.
pub fn add(self, rhs: &'a str) -> <Cow<'a, str> as Add<&'a str>>::Output
[src]
impl<'a> Add<Cow<'a, str>> for Cow<'a, str>
1.14.0[src]
type Output = Cow<'a, str>
The resulting type after applying the +
operator.
pub fn add(
self,
rhs: Cow<'a, str>
) -> <Cow<'a, str> as Add<Cow<'a, str>>>::Output
[src]
self,
rhs: Cow<'a, str>
) -> <Cow<'a, str> as Add<Cow<'a, str>>>::Output
impl<'a> AddAssign<&'a str> for Cow<'a, str>
1.14.0[src]
pub fn add_assign(&mut self, rhs: &'a str)
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impl<'a> AddAssign<Cow<'a, str>> for Cow<'a, str>
1.14.0[src]
pub fn add_assign(&mut self, rhs: Cow<'a, str>)
[src]
impl<'_> AsRef<Path> for Cow<'_, OsStr>
1.8.0[src]
impl<'_, T> AsRef<T> for Cow<'_, T> where
T: ToOwned + ?Sized,
[src]
T: ToOwned + ?Sized,
pub fn as_ref(&self) -> &TⓘNotable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized, '_> Read for &'_ mut Rimpl<W: Write + ?Sized, '_> Write for &'_ mut W
[src]
Notable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized, '_> Read for &'_ mut Rimpl<W: Write + ?Sized, '_> Write for &'_ mut W
impl<'a, B> Borrow<B> for Cow<'a, B> where
B: ToOwned + ?Sized,
<B as ToOwned>::Owned: 'a,
[src]
B: ToOwned + ?Sized,
<B as ToOwned>::Owned: 'a,
pub fn borrow(&self) -> &BⓘNotable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized, '_> Read for &'_ mut Rimpl<W: Write + ?Sized, '_> Write for &'_ mut W
[src]
Notable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized, '_> Read for &'_ mut Rimpl<W: Write + ?Sized, '_> Write for &'_ mut W
impl<'_, B> Clone for Cow<'_, B> where
B: ToOwned + ?Sized,
[src]
B: ToOwned + ?Sized,
impl<'_, B> Debug for Cow<'_, B> where
B: Debug + ToOwned + ?Sized,
<B as ToOwned>::Owned: Debug,
[src]
B: Debug + ToOwned + ?Sized,
<B as ToOwned>::Owned: Debug,
impl<'_, B> Default for Cow<'_, B> where
B: ToOwned + ?Sized,
<B as ToOwned>::Owned: Default,
1.11.0[src]
B: ToOwned + ?Sized,
<B as ToOwned>::Owned: Default,
pub fn default() -> Cow<'_, B>
[src]
Creates an owned Cow<'a, B> with the default value for the contained owned value.
impl<'_, B> Deref for Cow<'_, B> where
B: ToOwned + ?Sized,
[src]
B: ToOwned + ?Sized,
type Target = B
The resulting type after dereferencing.
pub fn deref(&self) -> &BⓘNotable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized, '_> Read for &'_ mut Rimpl<W: Write + ?Sized, '_> Write for &'_ mut W
[src]
Notable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized, '_> Read for &'_ mut Rimpl<W: Write + ?Sized, '_> Write for &'_ mut W
impl<'_, B> Display for Cow<'_, B> where
B: Display + ToOwned + ?Sized,
<B as ToOwned>::Owned: Display,
[src]
B: Display + ToOwned + ?Sized,
<B as ToOwned>::Owned: Display,
impl<'_, B> Eq for Cow<'_, B> where
B: Eq + ToOwned + ?Sized,
[src]
B: Eq + ToOwned + ?Sized,
impl<'a> Extend<Cow<'a, str>> for String
1.19.0[src]
pub fn extend<I>(&mut self, iter: I) where
I: IntoIterator<Item = Cow<'a, str>>,
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I: IntoIterator<Item = Cow<'a, str>>,
pub fn extend_one(&mut self, s: Cow<'a, str>)
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fn extend_reserve(&mut self, additional: usize)
[src]
impl<'a, T> From<&'a [T]> for Cow<'a, [T]> where
T: Clone,
1.8.0[src]
T: Clone,
impl<'a> From<&'a CStr> for Cow<'a, CStr>
1.28.0[src]
impl<'a> From<&'a CString> for Cow<'a, CStr>
1.28.0[src]
impl<'a> From<&'a OsStr> for Cow<'a, OsStr>
1.28.0[src]
impl<'a> From<&'a OsString> for Cow<'a, OsStr>
1.28.0[src]
impl<'a> From<&'a Path> for Cow<'a, Path>
1.6.0[src]
impl<'a> From<&'a PathBuf> for Cow<'a, Path>
1.28.0[src]
impl<'a> From<&'a String> for Cow<'a, str>
1.28.0[src]
impl<'a, T> From<&'a Vec<T>> for Cow<'a, [T]> where
T: Clone,
1.28.0[src]
T: Clone,
impl<'a> From<&'a str> for Cow<'a, str>
[src]
impl<'a> From<CString> for Cow<'a, CStr>
1.28.0[src]
impl<'_, T> From<Cow<'_, [T]>> for Box<[T], Global> where
T: Copy,
1.45.0[src]
T: Copy,
pub fn from(cow: Cow<'_, [T]>) -> Box<[T], Global>ⓘNotable traits for Box<F, A>
impl<F, A> Future for Box<F, A> where
A: AllocRef,
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<I, A> Iterator for Box<I, A> where
A: AllocRef,
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for Box<R>impl<W: Write + ?Sized> Write for Box<W>
[src]
Notable traits for Box<F, A>
impl<F, A> Future for Box<F, A> where
A: AllocRef,
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<I, A> Iterator for Box<I, A> where
A: AllocRef,
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for Box<R>impl<W: Write + ?Sized> Write for Box<W>
impl<'_> From<Cow<'_, CStr>> for Box<CStr>
1.45.0[src]
fn from(cow: Cow<'_, CStr>) -> Box<CStr>ⓘNotable traits for Box<F, A>
impl<F, A> Future for Box<F, A> where
A: AllocRef,
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<I, A> Iterator for Box<I, A> where
A: AllocRef,
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for Box<R>impl<W: Write + ?Sized> Write for Box<W>
[src]
Notable traits for Box<F, A>
impl<F, A> Future for Box<F, A> where
A: AllocRef,
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<I, A> Iterator for Box<I, A> where
A: AllocRef,
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for Box<R>impl<W: Write + ?Sized> Write for Box<W>
impl<'_> From<Cow<'_, OsStr>> for Box<OsStr>
1.45.0[src]
fn from(cow: Cow<'_, OsStr>) -> Box<OsStr>ⓘNotable traits for Box<F, A>
impl<F, A> Future for Box<F, A> where
A: AllocRef,
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<I, A> Iterator for Box<I, A> where
A: AllocRef,
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for Box<R>impl<W: Write + ?Sized> Write for Box<W>
[src]
Notable traits for Box<F, A>
impl<F, A> Future for Box<F, A> where
A: AllocRef,
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<I, A> Iterator for Box<I, A> where
A: AllocRef,
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for Box<R>impl<W: Write + ?Sized> Write for Box<W>
impl<'_> From<Cow<'_, Path>> for Box<Path>
1.45.0[src]
fn from(cow: Cow<'_, Path>) -> Box<Path>ⓘNotable traits for Box<F, A>
impl<F, A> Future for Box<F, A> where
A: AllocRef,
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<I, A> Iterator for Box<I, A> where
A: AllocRef,
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for Box<R>impl<W: Write + ?Sized> Write for Box<W>
[src]
Notable traits for Box<F, A>
impl<F, A> Future for Box<F, A> where
A: AllocRef,
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<I, A> Iterator for Box<I, A> where
A: AllocRef,
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for Box<R>impl<W: Write + ?Sized> Write for Box<W>
impl<'_> From<Cow<'_, str>> for Box<str, Global>
1.45.0[src]
pub fn from(cow: Cow<'_, str>) -> Box<str, Global>ⓘNotable traits for Box<F, A>
impl<F, A> Future for Box<F, A> where
A: AllocRef,
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<I, A> Iterator for Box<I, A> where
A: AllocRef,
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for Box<R>impl<W: Write + ?Sized> Write for Box<W>
[src]
Notable traits for Box<F, A>
impl<F, A> Future for Box<F, A> where
A: AllocRef,
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<I, A> Iterator for Box<I, A> where
A: AllocRef,
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for Box<R>impl<W: Write + ?Sized> Write for Box<W>
impl<'a, T> From<Cow<'a, [T]>> for Vec<T> where
[T]: ToOwned,
<[T] as ToOwned>::Owned == Vec<T>,
1.14.0[src]
[T]: ToOwned,
<[T] as ToOwned>::Owned == Vec<T>,
impl<'a, B> From<Cow<'a, B>> for Arc<B> where
B: ToOwned + ?Sized,
Arc<B>: From<&'a B>,
Arc<B>: From<<B as ToOwned>::Owned>,
1.45.0[src]
B: ToOwned + ?Sized,
Arc<B>: From<&'a B>,
Arc<B>: From<<B as ToOwned>::Owned>,
impl<'a, B> From<Cow<'a, B>> for Rc<B> where
B: ToOwned + ?Sized,
Rc<B>: From<&'a B>,
Rc<B>: From<<B as ToOwned>::Owned>,
1.45.0[src]
B: ToOwned + ?Sized,
Rc<B>: From<&'a B>,
Rc<B>: From<<B as ToOwned>::Owned>,
impl<'a> From<Cow<'a, CStr>> for CString
1.28.0[src]
impl<'a> From<Cow<'a, OsStr>> for OsString
1.28.0[src]
impl<'a> From<Cow<'a, Path>> for PathBuf
1.28.0[src]
impl<'a> From<Cow<'a, str>> for String
1.14.0[src]
impl<'a> From<Cow<'a, str>> for Box<dyn Error>
1.22.0[src]
fn from(err: Cow<'a, str>) -> Box<dyn Error>ⓘNotable traits for Box<F, A>
impl<F, A> Future for Box<F, A> where
A: AllocRef,
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<I, A> Iterator for Box<I, A> where
A: AllocRef,
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for Box<R>impl<W: Write + ?Sized> Write for Box<W>
[src]
Notable traits for Box<F, A>
impl<F, A> Future for Box<F, A> where
A: AllocRef,
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<I, A> Iterator for Box<I, A> where
A: AllocRef,
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for Box<R>impl<W: Write + ?Sized> Write for Box<W>
impl<'a, 'b> From<Cow<'b, str>> for Box<dyn Error + Send + Sync + 'a>
1.22.0[src]
fn from(err: Cow<'b, str>) -> Box<dyn Error + Send + Sync + 'a>ⓘNotable traits for Box<F, A>
impl<F, A> Future for Box<F, A> where
A: AllocRef,
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<I, A> Iterator for Box<I, A> where
A: AllocRef,
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for Box<R>impl<W: Write + ?Sized> Write for Box<W>
[src]
Notable traits for Box<F, A>
impl<F, A> Future for Box<F, A> where
A: AllocRef,
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<I, A> Iterator for Box<I, A> where
A: AllocRef,
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for Box<R>impl<W: Write + ?Sized> Write for Box<W>
Converts a Cow
into a box of dyn Error
+ Send
+ Sync
.
Examples
use std::error::Error; use std::mem; use std::borrow::Cow; let a_cow_str_error = Cow::from("a str error"); let a_boxed_error = Box::<dyn Error + Send + Sync>::from(a_cow_str_error); assert!( mem::size_of::<Box<dyn Error + Send + Sync>>() == mem::size_of_val(&a_boxed_error))Run
impl<'a> From<OsString> for Cow<'a, OsStr>
1.28.0[src]
impl<'a> From<PathBuf> for Cow<'a, Path>
1.6.0[src]
impl<'a> From<String> for Cow<'a, str>
[src]
impl<'a, T> From<Vec<T>> for Cow<'a, [T]> where
T: Clone,
1.8.0[src]
T: Clone,
impl<'a, 'b> FromIterator<&'b str> for Cow<'a, str>
1.12.0[src]
impl<'a> FromIterator<Cow<'a, str>> for String
1.19.0[src]
impl<'a> FromIterator<String> for Cow<'a, str>
1.12.0[src]
impl<'a, T> FromIterator<T> for Cow<'a, [T]> where
T: Clone,
[src]
T: Clone,
impl<'a> FromIterator<char> for Cow<'a, str>
1.12.0[src]
impl<'_, B> Hash for Cow<'_, B> where
B: Hash + ToOwned + ?Sized,
[src]
B: Hash + ToOwned + ?Sized,
pub fn hash<H>(&self, state: &mut H) where
H: Hasher,
[src]
H: Hasher,
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
1.3.0[src]
H: Hasher,
impl<'_, B> Ord for Cow<'_, B> where
B: Ord + ToOwned + ?Sized,
[src]
B: Ord + ToOwned + ?Sized,
pub fn cmp(&self, other: &Cow<'_, B>) -> Ordering
[src]
#[must_use]fn max(self, other: Self) -> Self
1.21.0[src]
#[must_use]fn min(self, other: Self) -> Self
1.21.0[src]
#[must_use]fn clamp(self, min: Self, max: Self) -> Self
[src]
impl<'_, '_, A, B> PartialEq<&'_ [B]> for Cow<'_, [A]> where
A: PartialEq<B> + Clone,
[src]
A: PartialEq<B> + Clone,
impl<'_, '_, A, B> PartialEq<&'_ mut [B]> for Cow<'_, [A]> where
A: PartialEq<B> + Clone,
[src]
A: PartialEq<B> + Clone,
impl<'a, 'b> PartialEq<&'a Path> for Cow<'b, OsStr>
1.8.0[src]
impl<'a, 'b> PartialEq<&'b OsStr> for Cow<'a, OsStr>
1.8.0[src]
impl<'a, 'b> PartialEq<&'b OsStr> for Cow<'a, Path>
1.8.0[src]
impl<'a, 'b> PartialEq<&'b Path> for Cow<'a, Path>
1.6.0[src]
impl<'a, 'b> PartialEq<&'b str> for Cow<'a, str>
[src]
impl<'a, 'b> PartialEq<Cow<'a, OsStr>> for OsStr
1.8.0[src]
impl<'a, 'b> PartialEq<Cow<'a, OsStr>> for &'b OsStr
1.8.0[src]
impl<'a, 'b> PartialEq<Cow<'a, OsStr>> for OsString
1.8.0[src]
impl<'a, 'b> PartialEq<Cow<'a, OsStr>> for PathBuf
1.8.0[src]
impl<'a, 'b> PartialEq<Cow<'a, OsStr>> for Path
1.8.0[src]
impl<'a, 'b> PartialEq<Cow<'a, Path>> for Path
1.6.0[src]
impl<'a, 'b> PartialEq<Cow<'a, Path>> for &'b Path
1.6.0[src]
impl<'a, 'b> PartialEq<Cow<'a, Path>> for PathBuf
1.6.0[src]
impl<'a, 'b> PartialEq<Cow<'a, Path>> for OsStr
1.8.0[src]
impl<'a, 'b> PartialEq<Cow<'a, Path>> for &'b OsStr
1.8.0[src]
impl<'a, 'b> PartialEq<Cow<'a, Path>> for OsString
1.8.0[src]
impl<'a, 'b> PartialEq<Cow<'a, str>> for &'b str
[src]
pub fn eq(&self, other: &Cow<'a, str>) -> bool
[src]
pub fn ne(&self, other: &Cow<'a, str>) -> bool
[src]
impl<'a, 'b> PartialEq<Cow<'a, str>> for str
[src]
pub fn eq(&self, other: &Cow<'a, str>) -> bool
[src]
pub fn ne(&self, other: &Cow<'a, str>) -> bool
[src]
impl<'a, 'b> PartialEq<Cow<'a, str>> for String
[src]
pub fn eq(&self, other: &Cow<'a, str>) -> bool
[src]
pub fn ne(&self, other: &Cow<'a, str>) -> bool
[src]
impl<'a, 'b, B, C> PartialEq<Cow<'b, C>> for Cow<'a, B> where
B: PartialEq<C> + ToOwned + ?Sized,
C: ToOwned + ?Sized,
[src]
B: PartialEq<C> + ToOwned + ?Sized,
C: ToOwned + ?Sized,
impl<'a, 'b> PartialEq<Cow<'b, OsStr>> for &'a Path
1.8.0[src]
impl<'a, 'b> PartialEq<OsStr> for Cow<'a, OsStr>
1.8.0[src]
impl<'a, 'b> PartialEq<OsStr> for Cow<'a, Path>
1.8.0[src]
impl<'a, 'b> PartialEq<OsString> for Cow<'a, OsStr>
1.8.0[src]
impl<'a, 'b> PartialEq<OsString> for Cow<'a, Path>
1.8.0[src]
impl<'a, 'b> PartialEq<Path> for Cow<'a, Path>
1.6.0[src]
impl<'a, 'b> PartialEq<Path> for Cow<'a, OsStr>
1.8.0[src]
impl<'a, 'b> PartialEq<PathBuf> for Cow<'a, Path>
1.6.0[src]
impl<'a, 'b> PartialEq<PathBuf> for Cow<'a, OsStr>
1.8.0[src]
impl<'a, 'b> PartialEq<String> for Cow<'a, str>
[src]
impl<'_, A, B> PartialEq<Vec<B>> for Cow<'_, [A]> where
A: PartialEq<B> + Clone,
[src]
A: PartialEq<B> + Clone,
impl<'a, 'b> PartialEq<str> for Cow<'a, str>
[src]
impl<'a, 'b> PartialOrd<&'a Path> for Cow<'b, OsStr>
1.8.0[src]
fn partial_cmp(&self, other: &&'a Path) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<&'b OsStr> for Cow<'a, OsStr>
1.8.0[src]
fn partial_cmp(&self, other: &&'b OsStr) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<&'b OsStr> for Cow<'a, Path>
1.8.0[src]
fn partial_cmp(&self, other: &&'b OsStr) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<&'b Path> for Cow<'a, Path>
1.8.0[src]
fn partial_cmp(&self, other: &&'b Path) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, B> PartialOrd<Cow<'a, B>> for Cow<'a, B> where
B: PartialOrd<B> + ToOwned + ?Sized,
[src]
B: PartialOrd<B> + ToOwned + ?Sized,
pub fn partial_cmp(&self, other: &Cow<'a, B>) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<Cow<'a, OsStr>> for OsStr
1.8.0[src]
fn partial_cmp(&self, other: &Cow<'a, OsStr>) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<Cow<'a, OsStr>> for &'b OsStr
1.8.0[src]
fn partial_cmp(&self, other: &Cow<'a, OsStr>) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<Cow<'a, OsStr>> for OsString
1.8.0[src]
fn partial_cmp(&self, other: &Cow<'a, OsStr>) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<Cow<'a, OsStr>> for PathBuf
1.8.0[src]
fn partial_cmp(&self, other: &Cow<'a, OsStr>) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<Cow<'a, OsStr>> for Path
1.8.0[src]
fn partial_cmp(&self, other: &Cow<'a, OsStr>) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<Cow<'a, Path>> for Path
1.8.0[src]
fn partial_cmp(&self, other: &Cow<'a, Path>) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<Cow<'a, Path>> for &'b Path
1.8.0[src]
fn partial_cmp(&self, other: &Cow<'a, Path>) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<Cow<'a, Path>> for PathBuf
1.8.0[src]
fn partial_cmp(&self, other: &Cow<'a, Path>) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<Cow<'a, Path>> for OsStr
1.8.0[src]
fn partial_cmp(&self, other: &Cow<'a, Path>) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<Cow<'a, Path>> for &'b OsStr
1.8.0[src]
fn partial_cmp(&self, other: &Cow<'a, Path>) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<Cow<'a, Path>> for OsString
1.8.0[src]
fn partial_cmp(&self, other: &Cow<'a, Path>) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<Cow<'b, OsStr>> for &'a Path
1.8.0[src]
fn partial_cmp(&self, other: &Cow<'b, OsStr>) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<OsStr> for Cow<'a, OsStr>
1.8.0[src]
fn partial_cmp(&self, other: &OsStr) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<OsStr> for Cow<'a, Path>
1.8.0[src]
fn partial_cmp(&self, other: &OsStr) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<OsString> for Cow<'a, OsStr>
1.8.0[src]
fn partial_cmp(&self, other: &OsString) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<OsString> for Cow<'a, Path>
1.8.0[src]
fn partial_cmp(&self, other: &OsString) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<Path> for Cow<'a, Path>
1.8.0[src]
fn partial_cmp(&self, other: &Path) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<Path> for Cow<'a, OsStr>
1.8.0[src]
fn partial_cmp(&self, other: &Path) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<PathBuf> for Cow<'a, Path>
1.8.0[src]
fn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'a, 'b> PartialOrd<PathBuf> for Cow<'a, OsStr>
1.8.0[src]
fn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
[src]
impl<'_> ToString for Cow<'_, str>
1.17.0[src]
Auto Trait Implementations
impl<'a, B: ?Sized> RefUnwindSafe for Cow<'a, B> where
B: RefUnwindSafe,
<B as ToOwned>::Owned: RefUnwindSafe,
B: RefUnwindSafe,
<B as ToOwned>::Owned: RefUnwindSafe,
impl<'a, B: ?Sized> Send for Cow<'a, B> where
B: Sync,
<B as ToOwned>::Owned: Send,
B: Sync,
<B as ToOwned>::Owned: Send,
impl<'a, B: ?Sized> Sync for Cow<'a, B> where
B: Sync,
<B as ToOwned>::Owned: Sync,
B: Sync,
<B as ToOwned>::Owned: Sync,
impl<'a, B: ?Sized> Unpin for Cow<'a, B> where
<B as ToOwned>::Owned: Unpin,
<B as ToOwned>::Owned: Unpin,
impl<'a, B: ?Sized> UnwindSafe for Cow<'a, B> where
B: RefUnwindSafe,
<B as ToOwned>::Owned: UnwindSafe,
B: RefUnwindSafe,
<B as ToOwned>::Owned: UnwindSafe,
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
[src]
T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
[src]
T: ?Sized,
pub fn borrow(&self) -> &TⓘNotable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized, '_> Read for &'_ mut Rimpl<W: Write + ?Sized, '_> Write for &'_ mut W
[src]
Notable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized, '_> Read for &'_ mut Rimpl<W: Write + ?Sized, '_> Write for &'_ mut W
impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]
T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut TⓘNotable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized, '_> Read for &'_ mut Rimpl<W: Write + ?Sized, '_> Write for &'_ mut W
[src]
Notable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized, '_> Read for &'_ mut Rimpl<W: Write + ?Sized, '_> Write for &'_ mut W
impl<T> From<T> for T
[src]
impl<T, U> Into<U> for T where
U: From<T>,
[src]
U: From<T>,
impl<T> ToOwned for T where
T: Clone,
[src]
T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
[src]
pub fn clone_into(&self, target: &mut T)
[src]
impl<T> ToString for T where
T: Display + ?Sized,
[src]
T: Display + ?Sized,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
[src]
U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
[src]
impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
[src]
U: TryFrom<T>,