Trait UpdateFn 

pub trait UpdateFn<State, Message> {
    // Required method
    fn update(&self, state: &mut State, message: Message) -> Task<Message>;
}

The update logic of some Application.

This trait allows the application builder to take any closure that returns any Into<Task<Message>>.

Required Methods

fn update(&self, state: &mut State, message: Message) -> Task<Message>

Processes the message and updates the state of the Application.

Dyn Compatibility

This trait is dyn compatible.

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

Implementations on Foreign Types

impl<State> UpdateFn<State, Infallible> for ()

fn update(&self, _state: &mut State, _message: Never) -> Task<Never>

Implementors

impl<T, State, Message, C> UpdateFn<State, Message> for T

where T: Fn(&mut State, Message) -> C, C: Into<Task<Message>>,