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| Brunkel#2646 | Redacted or Malformed Event | 16:59:42 |
| Brunkel#2646 | How can I use the gloo::timers::callback::Interval to increment my timer state each second? I'm confused about how I need to use the closures..
The code:
let timer = use_state(|| 0);
let mut interval: Interval;
fn start_timer() {
interval = Interval::new(1_000, {
let timer = timer.clone();
move || {
timer.set(*timer + 1);
}
});
}
Error msg: use the '|| { ... }' closure form instead | 17:06:40 |
|  Voidpumpkin#8396 joined the room. | 17:10:11 |
| Voidpumpkin#8396 | is this in astruct component or function component? | 17:10:11 |
| Brunkel#2646 | function component | 17:10:22 |
| Voidpumpkin#8396 | let timer = use_state(|| 0);
use_effect_with_deps(move |_|{
let interval = Interval::new(1_000, {
let timer = timer.clone();
move || { timer.set(*timer + 1); }
});
},());
| 17:10:28 |
| Voidpumpkin#8396 | but be carefull as you timer inside the callback can desync | 17:10:41 |
| Voidpumpkin#8396 | yeah actaully nvm this is really bad snippet | 17:10:59 |
| Voidpumpkin#8396 | let me fix this | 17:11:05 |
| Brunkel#2646 | haha ok | 17:11:14 |
| Voidpumpkin#8396 | let timer = use_state(|| 0);
use_effect_with_deps(move |_| {
let timer = timer.clone();
let interval = Interval::new(1_000, move || { timer.set(*timer + 1); });
move || drop(interval)
}, timer);
| 17:12:45 |
| Voidpumpkin#8396 | we need to recreate the closure every time timer updates | 17:13:08 |
| Voidpumpkin#8396 | because other vise *timer will result in an old value | 17:13:23 |
| Voidpumpkin#8396 | if dislike recreating timers | 17:13:46 |
| Voidpumpkin#8396 | you can use a reducer instead of state | 17:13:53 |
| Voidpumpkin#8396 | then yu would just send a some kinf of action like Action::Increment | 17:14:14 |
| Voidpumpkin#8396 | and your use_effect_with_deps dependiecies could just be () | 17:14:48 |
| Brunkel#2646 | Ah makes sense. I'll use the reducer method. Thanks for the quick response 🙂 | 17:19:14 |
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