Struct LocalBuilder

pub struct LocalBuilder<T>(pub T);

A SystemParamBuilder for a Local. The provided value will be used as the initial value of the Local.

Example

let system = (LocalBuilder(100),)
    .build_state(&mut world)
    .build_system(|local: Local<usize>| {
        assert_eq!(*local, 100);
    });

Tuple Fields

0: T

Trait Implementations

impl<T: Clone> Clone for LocalBuilder<T>

fn clone(&self) -> LocalBuilder<T>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug> Debug for LocalBuilder<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: Default> Default for LocalBuilder<T>

fn default() -> LocalBuilder<T>

Returns the “default value” for a type.

impl<'s, T: FromWorld + Send + 'static> SystemParamBuilder<Local<'s, T>> for LocalBuilder<T>

fn build( self, _world: &mut World, _meta: &mut SystemMeta, ) -> <Local<'s, T> as SystemParam>::State

Registers any World access used by this SystemParam and creates a new instance of this param’s State.

fn build_state(self, world: &mut World) -> SystemState<P>

Create a SystemState from a SystemParamBuilder. To create a system, call SystemState::build_system on the result.