Enum Effect 

pub enum Effect<Action> {
    Action(Action),
    Task(Box<dyn FnOnce() + Send>),
    Thunk(Box<dyn FnOnce(Box<dyn Dispatcher<Action>>) + Send>),
    Function(String, EffectFunction),
}

Represents a side effect that can be executed.

Effect is used to encapsulate actions that should be performed as a result of a state change. an effect can be either simple function or more complex thunk that require a dispatcher.

Variants

Action(Action)

An action that should be dispatched.

Task(Box<dyn FnOnce() + Send>)

A task which will be executed asynchronously.

Thunk(Box<dyn FnOnce(Box<dyn Dispatcher<Action>>) + Send>)

A task that takes the dispatcher as an argument.

Function(String, EffectFunction)

A function which has a result. The result is an Any type which can be downcasted to the expected type, It is useful when you want to produce an effect without any dependency of ‘store’

Caution

The result default ignored, if you want to get the result of the function, you can use a middleware like TestEffectMiddleware