Jonathan Kelley
14b3fa72e4
This commit adjusts how exprs and for loops are handled within rsx. This is a breaking change in terms of codegen, but has slight semantic changes as well. Now, when exprs/for loops are allocated, they are given a temporary. The temporary is elided to the <'a> lifetime of the bump, to satisfy the borrow checker. This fixes issues with signals where exprs/for loops mapping vecs out of RefCells would be caught up without a temporary lifetime.
39 lines
1.0 KiB
Rust
39 lines
1.0 KiB
Rust
use dioxus::prelude::*;
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use std::time::Duration;
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fn main() {
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dioxus_desktop::launch(app);
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}
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fn app(cx: Scope) -> Element {
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let mut count = dioxus_signals::use_signal(cx, || 0);
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let saved_values = dioxus_signals::use_signal(cx, || vec![0]);
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use_future!(cx, || async move {
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loop {
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count += 1;
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tokio::time::sleep(Duration::from_millis(400)).await;
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}
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});
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cx.render(rsx! {
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h1 { "High-Five counter: {count}" }
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button { onclick: move |_| count += 1, "Up high!" }
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button { onclick: move |_| count -= 1, "Down low!" }
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button {
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onclick: move |_| saved_values.push(count.value()),
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"Save this value"
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}
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// We can do boolean operations on the current signal value
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if count.value() > 5 {
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rsx!{ h2 { "High five!" } }
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}
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// We can cleanly map signals with iterators
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for value in saved_values.read().iter() {
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h3 { "Saved value: {value}" }
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}
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})
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}
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