mithril-vndb/docs/mithril.sync.md
2014-03-16 22:07:53 -04:00

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## m.sync
This method takes a list of promises and returns a promise that resolves when all promises in the input list have resolved. See [`m.deferred`](mithril.deferred) for more information on promises.
---
### Usage
```javascript
var greetAsync = function(delay) {
var deferred = m.deferred();
setTimeout(function() {
deferred.resolve("hello");
}, delay);
return deferred.promise;
};
m.sync([
greetAsync(1000),
greetAsync(1500)
]).then(function(args) {
console.log(args); // ["hello", "hello"]
});
```
---
### Signature
[How to read signatures](how-to-read-signatures.md)
```clike
Promise sync(Array<Promise> promises)
where:
Promise :: GetterSetter { Promise then(any successCallback(any value), any errorCallback(any value)) }
GetterSetter :: any getterSetter([any value])
```
- **Array<Promise> promises**
A list of promises to synchronize
- **return Promise promise**
The promise of the deferred object that is resolved when all input promises have been resolved
The callbacks for this promise receive as a parameter an Array containing the values of all the input promises