Struct RefCell

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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<'a>(&'a self) -> Ref<'a, 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.

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Panics if the value is currently mutably borrowed.

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pub fn borrow_mut<'a>(&'a self) -> RefMut<'a, 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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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 for RefCell<T>

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

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

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> !Freeze for RefCell<T>

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

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

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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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.