Mirrors/dioxus
2
0
Fork 0
mirror of https://github.com/DioxusLabs/dioxus synced 2024-11-23 04:33:06 +00:00
Code Issues Projects Releases Packages Wiki Activity

updated

Browse source
This commit is contained in:
marc2332 2023-07-06 17:23:37 +02:00
parent 052ae145bf
commit 1f3f72edc3
No known key found for this signature in database
GPG key ID: C06A66E2828F72E1
1 changed files with 9 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
docs/guide/src/en/async/use_effect.md
View file

@ -1,14 +1,12 @@
# UseEffect
[`use_effect`](https://docs.rs/dioxus-hooks/latest/dioxus_hooks/fn.use_effect.html) provides a future that executes after the hooks have been applied.
Whenever the hooks [dependencies](#dependencies) change, the future will be re-evaluated. This is useful to syncrhonize with external events.
[`use_effect`](https://docs.rs/dioxus-hooks/latest/dioxus_hooks/fn.use_effect.html) let's you run a callback that returns a future, only it's [dependencies](#dependencies) change. This is useful to syncrhonize with external events.
## Dependencies
You can make the future re-run when some value changes. For example, you might want to fetch a user's data only when the user id changes. You can provide a tuple of "dependencies" to the hook. It will automatically re-run the future when any of those dependencies change.
You can make the callback re-run when some value changes. For example, you might want to fetch a user's data only when the user id changes. You can provide a tuple of "dependencies" to the hook. It will automatically re-run it when any of those dependencies change.
Example:
## Example
```rust, no_run
#[inline_props]
@ -24,6 +22,12 @@ fn Profile(cx: Scope, id: usize) -> Element {
}
});
// Because the dependencies are empty, this will only run once.
// An empty tuple is always equal to an empty tuple.
use_effect(cx, (), |()| async move {
println!("Hello, World!");
});
let name = name.get().clone().unwrap_or("Loading...".to_string());
render!(