Trait ViewStateExt

pub trait ViewStateExt: ViewState {
    // Provided methods
    fn downcast_ref<T>(&self) -> Result<&T, ViewSystemExecutionError>
       where T: ViewState { ... }
    fn downcast_mut<T>(&mut self) -> Result<&mut T, ViewSystemExecutionError>
       where T: ViewState { ... }
}

Provided Methods

fn downcast_ref<T>(&self) -> Result<&T, ViewSystemExecutionError>

where T: ViewState,

Downcasts this state to a reference of a concrete type.

fn downcast_mut<T>(&mut self) -> Result<&mut T, ViewSystemExecutionError>

where T: ViewState,

Downcasts this state to a mutable reference of a concrete type.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl ViewStateExt for dyn ViewState