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therustmonk avatar therustmonk commented on July 3, 2024 2

It's an interesting question. Robust flexibility is the place where Rust is awesome.

Actually we can use list of messages which helps us to send multiple messages by single event, but it will force us to use lists everywhere:

fn update(context: &mut Context<Msg>, model: &mut Model, msgs: Vec<Msg>) {
   for msg in msgs {
      // ...
   }
}

html! {
                 <button onclick=|_| vec![Msg::Increment],>{ "Increment" }</button>
                 <button onclick=|_| vec![Msg::Decrement],>{ "Decrement" }</button>
                 <button onclick=|_| vec![Msg::Increment, Msg::Increment],>{ "Increment Twice" }</button>
}

It works, but little messy and has performance impact: we should wrap even single message in a list, but lists is a dynamic struct and works slower than plain one. I think the good approach is to use Rust struct features and add special message type to send multiple messages at once (I've already did it in #52):

enum Msg {
     Increment,
     Decrement,
     Bulk(Vec<Msg>),
 }

fn update(context: &mut Context<Msg>, model: &mut Model, msg: Msg) {
    match msg {
        Msg::Bulk(list) => {
            for msg in list { update(context, model, msg); }
        }
        _ => { }
    }
}

html! {
   <button onclick=|_| Msg::Bulk(vec!(Msg::Increment, Msg::Increment)),>{ "Increment Twice" }</button>
}

Does it solve your issue?

from yew.

rivertam avatar rivertam commented on July 3, 2024

Ah, that's a great approach! It would be nice to see something built-in, but this definitely solves my problem, at least for now. =)

from yew.

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