The program that I use to manage my small business, basically a GUI wrapper on an sql DB is a total delight to use, because everything happens instantly. Even opening it is instantaneous.
Modern software is such a bloated mess that you kind of get used to a 20 second start-up and a .25-1 second delay on every action. Then you use something that isn't bloated junk and it feels like actual magic.
I'm curious if you use winit for windowing, or something lower level that's just mac specific.
UI library is here: https://github.com/josephg/leptos-native
And here's the schedule viewer app I made with it. It runs silky smooth on device: https://github.com/josephg/dweb-sched
The whole project is currently experimental & vibe coded. It's missing a lot of components, and it has bugs. I'm currently rewriting it by hand to do it properly.
I tried to learn SwiftUI a few years ago. XCode was horribly slow, and it would hang and crash all the time, even when working on small example projects. I'm excited by the thought that I can use any rust IDE to write UI code. Rust's compiler, toolchain and IDEs seem way more reliable.
The view! builder macro at the moment is designed to look like JSX, since it was ported directly from leptos. But I'm considering dropping the jsx and using a fluent API. Something like this:
let count = RwSignal::new(0u32);
let view = vstack().padding(16.0).gap(12.0)
.child(label().text(move || format!("Count: {}", count.get())))
.child(
hstack().gap(8.0)
.child(button()
.on_click(move |_| count.update(|c| *c = 0))
.text("Clear"))
.child(button()
.on_click(move |_| count.update(|c| *c -= 1))
.text("-1"))
.child(button()
.on_click(move |_| count.update(|c| *c += 1))
.text("+1"))
);
Code is a bit less readable like this, but autocomplete and cmd+click all works out of the box in your IDE.