Struct core::cell::RefCellStable
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[src]
pub struct RefCell<T> { // some fields omitted }
A mutable memory location with dynamically checked borrow rules
Methods
impl<T> RefCell<T>
fn new(value: T) -> RefCell<T>
Create a new RefCell
containing value
fn into_inner(self) -> T
Consumes the RefCell
, returning the wrapped value.
fn unwrap(self) -> T
Deprecated, use into_inner() instead
fn try_borrow<'a>(&'a self) -> Option<Ref<'a, T>>
Attempts to immutably borrow the wrapped value.
The borrow lasts until the returned Ref
exits scope. Multiple
immutable borrows can be taken out at the same time.
Returns None
if the value is currently mutably borrowed.
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.
Panics
Panics if the value is currently mutably borrowed.
fn try_borrow_mut<'a>(&'a self) -> Option<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.
Returns None
if the value is currently borrowed.
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.
unsafe fn as_unsafe_cell<'a>(&'a self) -> &'a UnsafeCell<T>
Get a reference to the underlying UnsafeCell
.
This can be used to circumvent RefCell
's safety checks.
This function is unsafe
because UnsafeCell
's field is public.