Function sycamore_reactive::create_scope

pub fn create_scope<'a>(callback: impl FnOnce() + 'a) -> ReactiveScope

Creates a new reactive root / scope. Generally, you won’t need this method as it is called automatically in render.

The parent of the created ReactiveScope is automatically set to the current scope. If this behavior is not intended, see create_child_scope_in.

Example

use sycamore_reactive::*;

let trigger = Signal::new(());
let counter = Signal::new(0);

let scope = create_scope(cloned!((trigger, counter) => move || {
    create_effect(move || {
        trigger.get(); // subscribe to trigger
        counter.set(*counter.get_untracked() + 1);
    });
}));

assert_eq!(*counter.get(), 1);

trigger.set(());
assert_eq!(*counter.get(), 2);

drop(scope);
trigger.set(());
assert_eq!(*counter.get(), 2); // should not be updated because scope was dropped