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### `Rx.Observable.generate(initialState, condition, iterate, resultSelector, [scheduler])`
[Ⓢ](https://github.com/Reactive-Extensions/RxJS/blob/master/src/core/linq/observable/generate.js "View in source")
Generates an observable sequence in a manner similar to a for loop, using an optional scheduler to enumerate the values.
#### Arguments
1. `initialState` *(`Any`)*: Initial state.
2. `condition` *(`Function`)*: Condition to terminate generation (upon returning false).
3. `iterate` *(`Function`)*: Iteration step function.
4. `resultSelector` *(`Function`)*: Selector function for results produced in the sequence.
5. `[scheduler=Rx.Scheduler.currentThread]` *(`Scheduler`)*: Scheduler on which to run the generator loop. If not provided, defaults to Scheduler.currentThread.
#### Returns
*(`Observable`)*: The generated sequence.
#### Example
```js
var source = Rx.Observable.generate(
0,
function (x) { return x < 3; },
function (x) { return x + 1; },
function (x) { return x; }
);
var subscription = source.subscribe(
function (x) {
console.log('Next: ' + x);
},
function (err) {
console.log('Error: ' + err);
},
function () {
console.log('Completed');
});
// => Next: 0
// => Next: 1
// => Next: 2
// => Completed
```
### Location
File:
- [/src/core/linq/observable/generate.js](https://github.com/Reactive-Extensions/RxJS/blob/master/src/core/linq/observable/generate.js)
Dist:
- [`rx.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.js)
- [`rx.compat.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.compat.js)
- [`rx.all.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.all.js)
- [`rx.all.compat.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.all.compat.js)
- [`rx.lite.extras.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.lite.extras.js)
Prerequisites:
- None
NPM Packages:
- [`rx`](https://www.npmjs.org/package/rx)
NuGet Packages:
- [`RxJS-All`](http://www.nuget.org/packages/RxJS-All/)
- [`RxJS-Main`](http://www.nuget.org/packages/RxJS-Main/)
- [`RxJS-Lite`](http://www.nuget.org/packages/RxJS-Lite/)
Unit Tests:
- [/tests/observable/generate.js](https://github.com/Reactive-Extensions/RxJS/blob/master/tests/observable/generate.js)
|
