# This is RxJS v 4. [Find the latest version here](https://github.com/reactivex/rxjs) # RxJS Aggregates Module # The Reactive Extensions for JavaScript has a number of aggregation operators including those you might already know from the Array#extras and the upcoming ES6 standard such as `reduce`, `find` and `findIndex`. This module is used exclusively for aggregation operations used on finite observable sequences. In addition to the aforementioned operators, there are many useful operators such as `count`, `sum`, `average` and determining whether two sequences are equal via the `sequenceEqual` method. ## Details ## Files: - [`rx.aggregates.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.aggregates.js) NPM Packages: - [`rx`](https://www.npmjs.org/package/rx) NuGet Packages: - [`RxJS-Aggregates`](http://www.nuget.org/packages/RxJS-Aggregates/) File Dependencies: - [`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.lite.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.lite.js) | [`rx.lite.compat.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.lite.compat.js) NuGet Dependencies: - [`RxJS-Main`](http://www.nuget.org/packages/RxJS-Main/) | [`RxJS-Lite`](http://www.nuget.org/packages/RxJS-Lite/) ## Included Observable Operators ## ### `Observable Instance Methods` - [`aggregate`](../../api/core/operators/reduce.md) - [`all`](../../api/core/operators/every.md) - [`any`](../../api/core/operators/some.md) - [`average`](../../api/core/operators/average.md) - [`includes`](../../api/core/operators/includes.md) - [`count`](../../api/core/operators/count.md) - [`elementAt`](../../api/core/operators/elementat.md) - [`every`](../../api/core/operators/every.md) - [`find`](../../api/core/operators/find.md) - [`findIndex`](../../api/core/operators/findindex.md) - [`first`](../../api/core/operators/first.md) - [`indexOf`](../../api/core/operators/indexof.md) - [`isEmpty`](../../api/core/operators/isempty.md) - [`last`](../../api/core/operators/last.md) - [`lastIndexOf`](../../api/core/operators/lastindexof.md) - [`max`](../../api/core/operators/max.md) - [`maxBy`](../../api/core/operators/maxby.md) - [`min`](../../api/core/operators/min.md) - [`minBy`](../../api/core/operators/minby.md) - [`reduce`](../../api/core/operators/reduce.md) - [`sequenceEqual`](../../api/core/operators/sequenceequal.md) - [`single`](../../api/core/operators/single.md) - [`slice`](../../api/core/operators/slice.md) - [`some`](../../api/core/operators/some.md) - [`sum`](../../api/core/operators/sum.md) - [`toMap`](../../api/core/operators/tomap.md) - [`toSet`](../../api/core/operators/toset.md)