Trait BorrowAppContext 

pub trait BorrowAppContext {
    // Required methods
    fn set_global<T: Global>(&mut self, global: T);
    fn update_global<G, R>(
        &mut self,
        f: impl FnOnce(&mut G, &mut Self) -> R,
    ) -> R
       where G: Global;
    fn update_default_global<G, R>(
        &mut self,
        f: impl FnOnce(&mut G, &mut Self) -> R,
    ) -> R
       where G: Global + Default;
}

A helper trait for auto-implementing certain methods on contexts that can be used interchangeably.

Required Methods

fn set_global<T: Global>(&mut self, global: T)

Set a global value on the context.

fn update_global<G, R>(&mut self, f: impl FnOnce(&mut G, &mut Self) -> R) -> R

where G: Global,

Updates the global state of the given type.

fn update_default_global<G, R>( &mut self, f: impl FnOnce(&mut G, &mut Self) -> R, ) -> R

where G: Global + Default,

Updates the global state of the given type, creating a default if it didn’t exist before.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<C> BorrowAppContext for C

where C: BorrowMut<App>,