pub struct Res<'a, T>(/* private fields */)
where
T: HasSchema;
Expand description
SystemParam
for getting read access to a resource.
Use ResInit
if you want to automatically initialize the resource.
Trait Implementations§
source§impl<'a, T> SystemParam for Res<'a, T>where
T: HasSchema,
impl<'a, T> SystemParam for Res<'a, T>where
T: HasSchema,
§type State = AtomicResource<T>
type State = AtomicResource<T>
The intermediate state for the parameter, that may be extracted from the world.
§type Param<'p> = Res<'p, T>
type Param<'p> = Res<'p, T>
The type of the parameter, ranging over the lifetime of the intermediate state. Read more
source§fn get_state(world: &World) -> <Res<'a, T> as SystemParam>::State
fn get_state(world: &World) -> <Res<'a, T> as SystemParam>::State
This is called to produce the intermediate state of the system parameter. Read more
source§fn borrow<'s>(
_world: &'s World,
state: &'s mut <Res<'a, T> as SystemParam>::State,
) -> <Res<'a, T> as SystemParam>::Param<'s>
fn borrow<'s>( _world: &'s World, state: &'s mut <Res<'a, T> as SystemParam>::State, ) -> <Res<'a, T> as SystemParam>::Param<'s>
This is used create an instance of the system parame, possibly borrowed from the
intermediate parameter state.
Auto Trait Implementations§
impl<'a, T> Freeze for Res<'a, T>
impl<'a, T> RefUnwindSafe for Res<'a, T>where
T: RefUnwindSafe,
impl<'a, T> Send for Res<'a, T>
impl<'a, T> Sync for Res<'a, T>
impl<'a, T> Unpin for Res<'a, T>
impl<'a, T> UnwindSafe for Res<'a, T>where
T: RefUnwindSafe,
Blanket Implementations§
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
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more