pub struct RefCell<T: ?Sized> { /* private fields */ }
Expand description

A clone of the standard library’s RefCell type.

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impl<T> RefCell<T>

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pub fn new(value: T) -> RefCell<T>

Creates a new RefCell containing value.

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pub fn into_inner(self) -> T

Consumes the RefCell, returning the wrapped value.

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impl<T: ?Sized> RefCell<T>

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pub fn borrow(&self) -> Ref<'_, T>

Immutably borrows the wrapped value.

The borrow lasts until the returned Ref exits scope. Multiple immutable borrows can be taken out at the same time.

Panics

Panics if the value is currently mutably borrowed.

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pub fn try_borrow(&self) -> Result<Ref<'_, T>, BorrowError>

Immutably borrows the wrapped value.

The borrow lasts until the returned Ref exits scope. Multiple immutable borrows can be taken out at the same time.

Panics

Panics if the value is currently mutably borrowed.

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pub fn borrow_mut(&self) -> RefMut<'_, T>

Mutably borrows the wrapped value.

The borrow lasts until the returned RefMut exits scope. The value cannot be borrowed while this borrow is active.

Panics

Panics if the value is currently borrowed.

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pub fn try_borrow_mut(&self) -> Result<RefMut<'_, T>, BorrowMutError>

Tries borrowing the wrapped value mutably.

The borrow lasts until the returned RefMut exits scope. The value cannot be borrowed while this borrow is active.

Trait Implementations§

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impl<T: Clone> Clone for RefCell<T>

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fn clone(&self) -> RefCell<T>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<T: Default> Default for RefCell<T>

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fn default() -> RefCell<T>

Returns the “default value” for a type. Read more
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impl<T: ?Sized + PartialEq> PartialEq<RefCell<T>> for RefCell<T>

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fn eq(&self, other: &RefCell<T>) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<T: ?Sized + Eq> Eq for RefCell<T>

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impl<T> Send for RefCell<T>where T: Send + ?Sized,

Auto Trait Implementations§

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impl<T> !RefUnwindSafe for RefCell<T>

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impl<T> !Sync for RefCell<T>

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impl<T: ?Sized> Unpin for RefCell<T>where T: Unpin,

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impl<T: ?Sized> UnwindSafe for RefCell<T>where T: UnwindSafe,

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.