Trait specs::prelude::Resource

pub trait Resource: 'static + Any + Send + Sync { }

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).

Implementations

impl dyn Resource + 'static

pub fn downcast<T>(
    self: Box<dyn Resource + 'static, Global>
) -> Result<Box<T, Global>, Box<dyn Resource + 'static, Global>> 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, Global>
) -> Box<T, Global> where
    T: Resource, 

Returns the boxed value, blindly assuming it to be of type T.

Safety

If you are not absolutely certain of T, you must not call this. Using anything other than the correct type T for this Resource will result in UB.

pub fn is<T>(&self) -> bool where
    T: Resource, 

Returns true if the boxed type is the same as T

pub fn downcast_ref<T>(&self) -> Option<&T> where
    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, 

Returns a reference to the boxed value, blindly assuming it to be of type T.

Safety

If you are not absolutely certain of T, you must not call this. Using anything other than the correct type T for this Resource will result in UB.

pub fn downcast_mut<T>(&mut self) -> Option<&mut T> where
    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, 

Returns a mutable reference to the boxed value, blindly assuming it to be of type T.

Safety

If you are not absolutely certain of T, you must not call this. Using anything other than the correct type T for this Resource will result in UB.

Implementors

impl<T> Resource for T where
    T: Any + Send + Sync,