[−][src]Trait specs::prelude::Resource
A resource is a data slot which lives in the World
can only be accessed
according to Rust's typical borrowing model (one writer xor multiple
readers).
Methods
impl dyn Resource + 'static
pub fn downcast<T>(
self: Box<dyn Resource + 'static>
) -> Result<Box<T>, Box<dyn Resource + 'static>> where
T: Resource,
self: Box<dyn Resource + 'static>
) -> Result<Box<T>, Box<dyn Resource + 'static>> where
T: Resource,
Returns the boxed value if it is of type T
, or Err(Self)
if it isn't.
pub unsafe fn downcast_unchecked<T>(self: Box<dyn Resource + 'static>) -> Box<T> where
T: Resource,
T: Resource,
Returns the boxed value, blindly assuming it to be of type T
.
If you are not absolutely certain of T
, you must not call this.
impl dyn Resource + 'static
pub fn is<T>(&self) -> bool where
T: Resource,
T: Resource,
Returns true if the boxed type is the same as T
pub fn downcast_ref<T>(&self) -> Option<&T> where
T: Resource,
T: Resource,
Returns some reference to the boxed value if it is of type T
, or
None
if it isn't.
pub unsafe fn downcast_ref_unchecked<T>(&self) -> &T where
T: Resource,
T: Resource,
Returns a reference to the boxed value, blindly assuming it to be of type T
.
If you are not absolutely certain of T
, you must not call this.
pub fn downcast_mut<T>(&mut self) -> Option<&mut T> where
T: Resource,
T: Resource,
Returns some mutable reference to the boxed value if it is of type T
, or
None
if it isn't.
pub unsafe fn downcast_mut_unchecked<T>(&mut self) -> &mut T where
T: Resource,
T: Resource,
Returns a mutable reference to the boxed value, blindly assuming it to be of type T
.
If you are not absolutely certain of T
, you must not call this.