Enum enso_prelude::Cow 1.0.0[−][src]
pub enum Cow<'a, B> where
B: 'a + ToOwned + ?Sized, { Borrowed(&'a B), Owned(<B as ToOwned>::Owned), }
Expand description
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.
If you need reference-counting pointers, note that
Rc::make_mut
and
Arc::make_mut
can provide clone-on-write
functionality as well.
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);
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"), }
Variants
Borrowed(&'a B)
Expand description
Borrowed data.
Expand description
Owned data.
Implementations
impl<'_, B> Cow<'_, B> where
B: ToOwned + ?Sized,
[src]
impl<'_, B> Cow<'_, B> where
B: ToOwned + ?Sized,
[src]pub const fn is_borrowed(&self) -> bool
[src]
🔬 This is a nightly-only experimental API. (cow_is_borrowed
)
pub const fn is_borrowed(&self) -> bool
[src]cow_is_borrowed
)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());
pub const fn is_owned(&self) -> bool
[src]
🔬 This is a nightly-only experimental API. (cow_is_borrowed
)
pub const fn is_owned(&self) -> bool
[src]cow_is_borrowed
)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());
pub fn to_mut(&mut self) -> &mut <B as ToOwned>::Owned
[src]
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> );
pub fn into_owned(self) -> <B as ToOwned>::Owned
[src]
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) );
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) );
Trait Implementations
impl<'a> AddAssign<&'a str> for Cow<'a, str>
1.14.0[src]
impl<'a> AddAssign<&'a str> for Cow<'a, str>
1.14.0[src]pub fn add_assign(&mut self, rhs: &'a str)
[src]
pub fn add_assign(&mut self, rhs: &'a str)
[src]Performs the +=
operation. Read more
impl<'a> AddAssign<Cow<'a, str>> for Cow<'a, str>
1.14.0[src]
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]
pub fn add_assign(&mut self, rhs: Cow<'a, str>)
[src]Performs the +=
operation. Read more
impl<'_, B> Debug for Cow<'_, B> where
B: Debug + ToOwned + ?Sized,
<B as ToOwned>::Owned: Debug,
[src]
impl<'_, B> Debug for Cow<'_, B> where
B: Debug + ToOwned + ?Sized,
<B as ToOwned>::Owned: Debug,
[src]impl<'_, B> Default for Cow<'_, B> where
B: ToOwned + ?Sized,
<B as ToOwned>::Owned: Default,
1.11.0[src]
impl<'_, B> Default for Cow<'_, B> where
B: ToOwned + ?Sized,
<B as ToOwned>::Owned: Default,
1.11.0[src]impl<'_, B> Display for Cow<'_, B> where
B: Display + ToOwned + ?Sized,
<B as ToOwned>::Owned: Display,
[src]
impl<'_, B> Display for Cow<'_, B> where
B: Display + ToOwned + ?Sized,
<B as ToOwned>::Owned: Display,
[src]impl<'a> Extend<Cow<'a, OsStr>> for OsString
1.52.0[src]
impl<'a> Extend<Cow<'a, OsStr>> for OsString
1.52.0[src]pub fn extend<T>(&mut self, iter: T) where
T: IntoIterator<Item = Cow<'a, OsStr>>,
[src]
pub fn extend<T>(&mut self, iter: T) where
T: IntoIterator<Item = Cow<'a, OsStr>>,
[src]Extends a collection with the contents of an iterator. Read more
fn extend_one(&mut self, item: A)
[src]
fn extend_one(&mut self, item: A)
[src]extend_one
)Extends a collection with exactly one element.
fn extend_reserve(&mut self, additional: usize)
[src]
fn extend_reserve(&mut self, additional: usize)
[src]extend_one
)Reserves capacity in a collection for the given number of additional elements. Read more
impl<'a> Extend<Cow<'a, str>> for String
1.19.0[src]
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>>,
[src]
pub fn extend<I>(&mut self, iter: I) where
I: IntoIterator<Item = Cow<'a, str>>,
[src]Extends a collection with the contents of an iterator. Read more
pub fn extend_one(&mut self, s: Cow<'a, str>)
[src]
pub fn extend_one(&mut self, s: Cow<'a, str>)
[src]extend_one
)Extends a collection with exactly one element.
fn extend_reserve(&mut self, additional: usize)
[src]
fn extend_reserve(&mut self, additional: usize)
[src]extend_one
)Reserves capacity in a collection for the given number of additional elements. Read more
impl<'a, T> From<Cow<'a, [T]>> for Vec<T, Global> where
[T]: ToOwned,
<[T] as ToOwned>::Owned == Vec<T, Global>,
1.14.0[src]
impl<'a, T> From<Cow<'a, [T]>> for Vec<T, Global> where
[T]: ToOwned,
<[T] as ToOwned>::Owned == Vec<T, Global>,
1.14.0[src]pub fn from(s: Cow<'a, [T]>) -> Vec<T, Global>ⓘ
[src]
pub fn from(s: Cow<'a, [T]>) -> Vec<T, Global>ⓘ
[src]Convert a clone-on-write slice into a vector.
If s
already owns a Vec<T>
, it will be returned directly.
If s
is borrowing a slice, a new Vec<T>
will be allocated and
filled by cloning s
’s items into it.
Examples
let o: Cow<[i32]> = Cow::Owned(vec![1, 2, 3]); let b: Cow<[i32]> = Cow::Borrowed(&[1, 2, 3]); assert_eq!(Vec::from(o), Vec::from(b));
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]
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]impl<'a, 'b> FromIterator<&'b str> for Cow<'a, str>
1.12.0[src]
impl<'a, 'b> FromIterator<&'b str> for Cow<'a, str>
1.12.0[src]impl<'a> FromIterator<Cow<'a, OsStr>> for OsString
1.52.0[src]
impl<'a> FromIterator<Cow<'a, OsStr>> for OsString
1.52.0[src]impl<'a> FromIterator<Cow<'a, str>> for String
1.19.0[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> FromIterator<String> for Cow<'a, str>
1.12.0[src]impl<'a> FromIterator<char> for Cow<'a, str>
1.12.0[src]
impl<'a> FromIterator<char> for Cow<'a, str>
1.12.0[src]impl<'_, B> Ord for Cow<'_, B> where
B: Ord + ToOwned + ?Sized,
[src]
impl<'_, B> Ord for Cow<'_, B> where
B: Ord + ToOwned + ?Sized,
[src]impl<'a, 'b, B, C> PartialEq<Cow<'b, C>> for Cow<'a, B> where
C: ToOwned + ?Sized,
B: PartialEq<C> + ToOwned + ?Sized,
[src]
impl<'a, 'b, B, C> PartialEq<Cow<'b, C>> for Cow<'a, B> where
C: ToOwned + ?Sized,
B: PartialEq<C> + ToOwned + ?Sized,
[src]impl<'_, T, U, A> PartialEq<Vec<U, A>> for Cow<'_, [T]> where
T: PartialEq<U> + Clone,
A: Allocator,
[src]
impl<'_, T, U, A> PartialEq<Vec<U, A>> for Cow<'_, [T]> where
T: PartialEq<U> + Clone,
A: Allocator,
[src]impl<'a, 'b> PartialOrd<&'a Path> for Cow<'b, OsStr>
1.8.0[src]
impl<'a, 'b> PartialOrd<&'a Path> for Cow<'b, OsStr>
1.8.0[src]pub fn partial_cmp(&self, other: &&'a Path) -> Option<Ordering>
[src]
pub fn partial_cmp(&self, other: &&'a Path) -> Option<Ordering>
[src]This method returns an ordering between self
and other
values if one exists. Read more
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]This method tests less than (for self
and other
) and is used by the <
operator. Read more
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<&'b OsStr> for Cow<'a, OsStr>
1.8.0[src]
impl<'a, 'b> PartialOrd<&'b OsStr> for Cow<'a, OsStr>
1.8.0[src]pub fn partial_cmp(&self, other: &&'b OsStr) -> Option<Ordering>
[src]
pub fn partial_cmp(&self, other: &&'b OsStr) -> Option<Ordering>
[src]This method returns an ordering between self
and other
values if one exists. Read more
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]This method tests less than (for self
and other
) and is used by the <
operator. Read more
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<&'b OsStr> for Cow<'a, Path>
1.8.0[src]
impl<'a, 'b> PartialOrd<&'b OsStr> for Cow<'a, Path>
1.8.0[src]pub fn partial_cmp(&self, other: &&'b OsStr) -> Option<Ordering>
[src]
pub fn partial_cmp(&self, other: &&'b OsStr) -> Option<Ordering>
[src]This method returns an ordering between self
and other
values if one exists. Read more
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]This method tests less than (for self
and other
) and is used by the <
operator. Read more
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<&'b Path> for Cow<'a, Path>
1.8.0[src]
impl<'a, 'b> PartialOrd<&'b Path> for Cow<'a, Path>
1.8.0[src]pub fn partial_cmp(&self, other: &&'b Path) -> Option<Ordering>
[src]
pub fn partial_cmp(&self, other: &&'b Path) -> Option<Ordering>
[src]This method returns an ordering between self
and other
values if one exists. Read more
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]This method tests less than (for self
and other
) and is used by the <
operator. Read more
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
impl<'a, B> PartialOrd<Cow<'a, B>> for Cow<'a, B> where
B: PartialOrd<B> + ToOwned + ?Sized,
[src]
impl<'a, B> PartialOrd<Cow<'a, B>> for Cow<'a, B> where
B: PartialOrd<B> + ToOwned + ?Sized,
[src]pub fn partial_cmp(&self, other: &Cow<'a, B>) -> Option<Ordering>
[src]
pub fn partial_cmp(&self, other: &Cow<'a, B>) -> Option<Ordering>
[src]This method returns an ordering between self
and other
values if one exists. Read more
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]This method tests less than (for self
and other
) and is used by the <
operator. Read more
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<OsStr> for Cow<'a, OsStr>
1.8.0[src]
impl<'a, 'b> PartialOrd<OsStr> for Cow<'a, OsStr>
1.8.0[src]pub fn partial_cmp(&self, other: &OsStr) -> Option<Ordering>
[src]
pub fn partial_cmp(&self, other: &OsStr) -> Option<Ordering>
[src]This method returns an ordering between self
and other
values if one exists. Read more
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]This method tests less than (for self
and other
) and is used by the <
operator. Read more
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<OsStr> for Cow<'a, Path>
1.8.0[src]
impl<'a, 'b> PartialOrd<OsStr> for Cow<'a, Path>
1.8.0[src]pub fn partial_cmp(&self, other: &OsStr) -> Option<Ordering>
[src]
pub fn partial_cmp(&self, other: &OsStr) -> Option<Ordering>
[src]This method returns an ordering between self
and other
values if one exists. Read more
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]This method tests less than (for self
and other
) and is used by the <
operator. Read more
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<OsString> for Cow<'a, Path>
1.8.0[src]
impl<'a, 'b> PartialOrd<OsString> for Cow<'a, Path>
1.8.0[src]pub fn partial_cmp(&self, other: &OsString) -> Option<Ordering>
[src]
pub fn partial_cmp(&self, other: &OsString) -> Option<Ordering>
[src]This method returns an ordering between self
and other
values if one exists. Read more
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]This method tests less than (for self
and other
) and is used by the <
operator. Read more
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<OsString> for Cow<'a, OsStr>
1.8.0[src]
impl<'a, 'b> PartialOrd<OsString> for Cow<'a, OsStr>
1.8.0[src]pub fn partial_cmp(&self, other: &OsString) -> Option<Ordering>
[src]
pub fn partial_cmp(&self, other: &OsString) -> Option<Ordering>
[src]This method returns an ordering between self
and other
values if one exists. Read more
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]This method tests less than (for self
and other
) and is used by the <
operator. Read more
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<Path> for Cow<'a, OsStr>
1.8.0[src]
impl<'a, 'b> PartialOrd<Path> for Cow<'a, OsStr>
1.8.0[src]pub fn partial_cmp(&self, other: &Path) -> Option<Ordering>
[src]
pub fn partial_cmp(&self, other: &Path) -> Option<Ordering>
[src]This method returns an ordering between self
and other
values if one exists. Read more
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]This method tests less than (for self
and other
) and is used by the <
operator. Read more
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<Path> for Cow<'a, Path>
1.8.0[src]
impl<'a, 'b> PartialOrd<Path> for Cow<'a, Path>
1.8.0[src]pub fn partial_cmp(&self, other: &Path) -> Option<Ordering>
[src]
pub fn partial_cmp(&self, other: &Path) -> Option<Ordering>
[src]This method returns an ordering between self
and other
values if one exists. Read more
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]This method tests less than (for self
and other
) and is used by the <
operator. Read more
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<PathBuf> for Cow<'a, OsStr>
1.8.0[src]
impl<'a, 'b> PartialOrd<PathBuf> for Cow<'a, OsStr>
1.8.0[src]pub fn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
[src]
pub fn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
[src]This method returns an ordering between self
and other
values if one exists. Read more
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]This method tests less than (for self
and other
) and is used by the <
operator. Read more
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<PathBuf> for Cow<'a, Path>
1.8.0[src]
impl<'a, 'b> PartialOrd<PathBuf> for Cow<'a, Path>
1.8.0[src]pub fn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
[src]
pub fn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
[src]This method returns an ordering between self
and other
values if one exists. Read more
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
[src]This method tests less than (for self
and other
) and is used by the <
operator. Read more
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
[src]This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
impl<'_, B> Eq for Cow<'_, B> where
B: Eq + ToOwned + ?Sized,
[src]
B: Eq + ToOwned + ?Sized,
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> BorrowMut<T> for T where
T: ?Sized,
[src]
impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]pub fn borrow_mut(&mut self) -> &mut T
[src]
pub fn borrow_mut(&mut self) -> &mut T
[src]Mutably borrows from an owned value. Read more
impl<T> Same<T> for T
impl<T> Same<T> for T
type Output = T
type Output = T
Should always be Self
impl<SS, SP> SupersetOf<SS> for SP where
SS: SubsetOf<SP>,
impl<SS, SP> SupersetOf<SS> for SP where
SS: SubsetOf<SP>,
pub fn to_subset(&self) -> Option<SS>
pub fn to_subset(&self) -> Option<SS>
The inverse inclusion map: attempts to construct self
from the equivalent element of its
superset. Read more
pub fn is_in_subset(&self) -> bool
pub fn is_in_subset(&self) -> bool
Checks if self
is actually part of its subset T
(and can be converted to it).
pub fn to_subset_unchecked(&self) -> SS
pub fn to_subset_unchecked(&self) -> SS
Use with care! Same as self.to_subset
but without any property checks. Always succeeds.
pub fn from_subset(element: &SS) -> SP
pub fn from_subset(element: &SS) -> SP
The inclusion map: converts self
to the equivalent element of its superset.
impl<T> ToOwned for T where
T: Clone,
[src]
impl<T> ToOwned for T where
T: Clone,
[src]type Owned = T
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
[src]
pub fn to_owned(&self) -> T
[src]Creates owned data from borrowed data, usually by cloning. Read more
pub fn clone_into(&self, target: &mut T)
[src]
pub fn clone_into(&self, target: &mut T)
[src]🔬 This is a nightly-only experimental API. (toowned_clone_into
)
recently added
Uses borrowed data to replace owned data, usually by cloning. Read more
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
pub fn vzip(self) -> V
impl<T, Right> ClosedAdd<Right> for T where
T: Add<Right, Output = T> + AddAssign<Right>,
T: Add<Right, Output = T> + AddAssign<Right>,