Struct all_is_cubes::universe::URef

pub struct URef<T> { /* fields omitted */ }

A reference from an object in a Universe to another.

If they are held by objects outside of the Universe, it is not guaranteed that they will remain valid (in which case using the URef will panic). To ensure an object does not vanish while operating on it, .borrow() it. (TODO: Should there be an operation in the style of Weak::upgrade?)

Implementations

impl<T: 'static> URef<T>

pub fn borrow(&self) -> UBorrow<T>

Borrow the value, in the sense of std::RefCell::borrow.

pub fn borrow_mut(&self) -> UBorrowMut<T>

Borrow the value mutably, in the sense of std::RefCell::borrow_mut.

Trait Implementations

impl<T: Clone> Clone for URef<T>

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

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug> Debug for URef<T>

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

Formats the value using the given formatter.

impl<T> Eq for URef<T>

URefs are compared by pointer equality.

impl<T> Hash for URef<T>

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given [Hasher].

impl<T> PartialEq<URef<T>> for URef<T>

URefs are compared by pointer equality: they are equal only if they refer to the same mutable cell.

fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use]fn ne(&self, other: &Rhs) -> bool

This method tests for !=.