pub struct RefCell<T: ?Sized> {
    pub(crate) borrows: RefCell<BorrowData>,
    pub(crate) inner: RefCell<T>,
}
Expand description

A RefCell that tracks outstanding borrows and reports stack traces for dynamic borrow failures.

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§borrows: RefCell<BorrowData>§inner: RefCell<T>

Implementations§

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impl<T> RefCell<T>

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

Create a new RefCell value.

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pub fn into_inner(self) -> T

Discard this RefCell and return the value stored inside of it.

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impl<T: ?Sized> RefCell<T>

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

Borrow the value stored in this cell immutably. Panics if any outstanding mutable borrows of the same cell exist.

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

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

Borrow the value stored in this cell mutably. Panics if there are any other outstanding borrows of this cell (mutable borrows are unique, i.e. there can only be one).

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

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pub fn as_ptr(&self) -> *mut T

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pub unsafe fn try_borrow_unguarded(&self) -> Result<&T, BorrowError>

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impl<T> RefCell<T>

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pub fn replace(&self, t: T) -> T

Corresponds to https://doc.rust-lang.org/std/cell/struct.RefCell.html#method.replace.

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pub fn replace_with<F: FnOnce(&mut T) -> T>(&self, f: F) -> T

Corresponds to https://doc.rust-lang.org/std/cell/struct.RefCell.html#method.replace_with.

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impl<T: Default> RefCell<T>

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pub fn take(&self) -> T

Corresponds to https://doc.rust-lang.org/std/cell/struct.RefCell.html#method.take.

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: Debug + ?Sized> Debug for RefCell<T>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. 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 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.

Auto Trait Implementations§

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impl<T> !Freeze for RefCell<T>

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impl<T> !RefUnwindSafe for RefCell<T>

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

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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 T
where 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 T
where 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 T
where 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 T
where 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 T
where 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 T
where 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 T
where 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.