pub struct Null;Trait Implementations§
Auto Trait Implementations§
impl Freeze for Null
impl RefUnwindSafe for Null
impl Send for Null
impl Sync for Null
impl Unpin for Null
impl UnsafeUnpin for Null
impl UnwindSafe for Null
Blanket Implementations§
§impl<T> AnyExt for T
impl<T> AnyExt for T
§fn downcast_ref<T>(this: &Self) -> Option<&T>where
T: Any,
fn downcast_ref<T>(this: &Self) -> Option<&T>where
T: Any,
Attempts to downcast this to
T behind reference§fn downcast_mut<T>(this: &mut Self) -> Option<&mut T>where
T: Any,
fn downcast_mut<T>(this: &mut Self) -> Option<&mut T>where
T: Any,
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T behind mutable reference§fn downcast_rc<T>(this: Rc<Self>) -> Result<Rc<T>, Rc<Self>>where
T: Any,
fn downcast_rc<T>(this: Rc<Self>) -> Result<Rc<T>, Rc<Self>>where
T: Any,
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T behind Rc pointer§fn downcast_arc<T>(this: Arc<Self>) -> Result<Arc<T>, Arc<Self>>where
T: Any,
fn downcast_arc<T>(this: Arc<Self>) -> Result<Arc<T>, Arc<Self>>where
T: Any,
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T behind Arc pointer§fn downcast_box<T>(this: Box<Self>) -> Result<Box<T>, Box<Self>>where
T: Any,
fn downcast_box<T>(this: Box<Self>) -> Result<Box<T>, Box<Self>>where
T: Any,
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T behind Box pointer§fn downcast_move<T>(this: Self) -> Option<T>
fn downcast_move<T>(this: Self) -> Option<T>
Attempts to downcast owned
Self to T,
useful only in generic context as a workaround for specializationSource§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more