[−][src]Struct cell::RefVal
A type containing a value that contains a borrowed reference to a
value from a RefCell<T>
.
See the module-level documentation for more.
Methods
impl<'b, T> RefVal<'b, T>
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pub fn clone(orig: &RefVal<'b, T>) -> RefVal<'b, T> where
T: Clone,
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T: Clone,
Copies a RefVal
.
The RefCell
is already immutably borrowed, so this cannot fail.
This is an associated function that needs to be used as
Ref::clone(...)
. A Clone
implementation or a method would interfere
with the widespread use of r.borrow().clone()
to clone the contents of
a RefCell
.
pub fn map<U: Sized, F>(orig: RefVal<'b, T>, f: F) -> RefVal<'b, U> where
F: FnOnce(T) -> U,
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F: FnOnce(T) -> U,
Make a new RefVal
from the another RefVal
.
The RefCell
is already immutably borrowed, so this operation
cannot fail.
Trait Implementations
impl<'_, T> Deref for RefVal<'_, T>
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impl<'_, T> DerefMut for RefVal<'_, T>
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impl<'_, T: Sized + Debug> Debug for RefVal<'_, T>
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impl<'_, T: Display> Display for RefVal<'_, T>
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Auto Trait Implementations
impl<'b, T> !Sync for RefVal<'b, T>
impl<'b, T> Unpin for RefVal<'b, T> where
T: Unpin,
T: Unpin,
impl<'b, T> !Send for RefVal<'b, T>
impl<'b, T> !UnwindSafe for RefVal<'b, T>
impl<'b, T> !RefUnwindSafe for RefVal<'b, T>
Blanket Implementations
impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> From<T> for T
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impl<T> ToString for T where
T: Display + ?Sized,
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T: Display + ?Sized,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,