pub struct Opt;
Trait Implementations§
Auto Trait Implementations§
impl Freeze for Opt
impl RefUnwindSafe for Opt
impl Send for Opt
impl Sync for Opt
impl Unpin for Opt
impl UnwindSafe for Opt
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Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
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Source§impl<T> Downcast for Twhere
T: Any,
impl<T> Downcast for Twhere
T: Any,
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where ConcreteType
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