pub trait RootExt:
Debug
+ Downcast
+ Send
+ Sync { }Expand description
Extension set member for a block context.
Implementations§
Source§impl dyn RootExt
impl dyn RootExt
Sourcepub fn is<__T: RootExt>(&self) -> bool
pub fn is<__T: RootExt>(&self) -> bool
Returns true if the trait object wraps an object of type __T.
Sourcepub fn downcast<__T: RootExt>(self: Box<Self>) -> Result<Box<__T>, Box<Self>>
pub fn downcast<__T: RootExt>(self: Box<Self>) -> Result<Box<__T>, Box<Self>>
Returns a boxed object from a boxed trait object if the underlying object is of type
__T. Returns the original boxed trait if it isn’t.
Sourcepub fn downcast_rc<__T: RootExt>(self: Rc<Self>) -> Result<Rc<__T>, Rc<Self>>
pub fn downcast_rc<__T: RootExt>(self: Rc<Self>) -> Result<Rc<__T>, Rc<Self>>
Returns an Rc-ed object from an Rc-ed trait object if the underlying object is of
type __T. Returns the original Rc-ed trait if it isn’t.
Sourcepub fn downcast_ref<__T: RootExt>(&self) -> Option<&__T>
pub fn downcast_ref<__T: RootExt>(&self) -> Option<&__T>
Returns a reference to the object within the trait object if it is of type __T, or
None if it isn’t.
Sourcepub fn downcast_mut<__T: RootExt>(&mut self) -> Option<&mut __T>
pub fn downcast_mut<__T: RootExt>(&mut self) -> Option<&mut __T>
Returns a mutable reference to the object within the trait object if it is of type
__T, or None if it isn’t.
Dyn Compatibility§
This trait is dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety".